dts: bindings: drop remaining "required: false" from bindings

Drop the remaining "required: false" from the bindings, make CI happy.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>

dts/bindings/base/pm.yaml

@@ -5,7 +5,6 @@
 
 properties:
   wakeup-source:
-    required: false
     type: boolean
     description: |
       Property to identify that a device can be used as wake up source.
@@ -18,7 +17,6 @@ properties:
       the system) by default but they can be enabled at runtime if necessary.
 
   power-domain:
-    required: false
     type: phandle
     description: |
 

dts/bindings/base/power.yaml

@@ -6,7 +6,6 @@
 properties:
   supply-gpios:
     type: phandle-array
-    required: false
     description: |
       GPIO specifier that controls power to the device.
 
@@ -18,7 +17,6 @@ properties:
 
   vin-supply:
     type: phandle
-    required: false
     description: |
       Reference to the regulator that controls power to the device.
       The referenced devicetree node must have a regulator compatible.

dts/bindings/base/zephyr,memory-region.yaml

@@ -19,7 +19,6 @@ properties:
 
   zephyr,memory-region-mpu:
     type: string
-    required: false
     enum:
       - "RAM"
       - "RAM_NOCACHE"

dts/bindings/clock/microchip,xec-pcr.yaml

@@ -11,9 +11,6 @@ properties:
   reg:
     required: true
 
-  interrupts:
-    required: false
-
   core-clock-div:
     type: int
     required: true
@@ -81,12 +78,10 @@ properties:
 
   clkmon-bypass:
     type: boolean
-    required: false
     description: Bypass clkmon check of crystal or XTAL2 single-ended clock.
 
   internal-osc-disable:
     type: boolean
-    required: false
     description: |
       If the internal silicon 32KHz oscillator is not chosen as the source
       for PLL and Periheral devices then disable the internal 32KHz

dts/bindings/dma/dma-controller.yaml

@@ -34,10 +34,8 @@ properties:
 
   dma-buf-size-alignment:
     type: int
-    required: false
     description: Memory size alignment requirement for DMA buffers used by the controller.
 
   dma-copy-alignment:
     type: int
-    required: false
     description: Minimal chunk of data possible to be copied by the controller.

dts/bindings/gpio/silabs,gecko-gpio-port.yaml

@@ -10,7 +10,6 @@ properties:
 
   peripheral-id:
     type: int
-    required: false
     description: peripheral ID
 
   "#gpio-cells":

dts/bindings/led/microchip,xec-bbled.yaml

@@ -14,12 +14,6 @@ properties:
   interrupts:
     required: true
 
-  pinctrl-0:
-    required: false
-
-  pinctrl-names:
-    required: false
-
   girqs:
     type: array
     required: true

dts/bindings/phy/usb-ulpi-phy.yaml

@@ -15,6 +15,5 @@ properties:
 
   reset-gpios:
     type: phandle-array
-    required: false
     description: |
       GPIO connected to the ulpi RESET pin.

dts/bindings/pinctrl/microchip,xec-pinctrl.yaml

@@ -119,7 +119,6 @@ child-binding:
         pin's PIO type and default drive strength.
 
     microchip,output-func-invert:
-      required: false
       type: boolean
       description:
         Invert polarity of an output alternate function. Input functions

dts/bindings/sensor/hzgrow,r502a.yaml

@@ -18,11 +18,9 @@ properties:
       It is used to trigger a fingerprint enroll or match operations.
   vin-gpios:
     type: phandle-array
-    required: false
     description: |
       Voltage input pin to the fingerprint sensor.
   act-gpios:
     type: phandle-array
-    required: false
     description: |
       Finger detection power pin to detect the presence of finger.

dts/bindings/serial/nxp,kinetis-lpuart.yaml

@@ -20,7 +20,6 @@ properties:
 
   nxp,rs485-mode:
     type: boolean
-    required: false
     description: |
       Set to enable RTS signal, which can be used to enable the driver
       of an external RS-485 transceiver. Note hw-flow-control should be
@@ -28,5 +27,4 @@ properties:
 
   nxp,rs485-de-active-low:
     type: boolean
-    required: false
     description: RTS polarity at RS485 mode.

dts/bindings/serial/silabs,gecko-usart.yaml

@@ -13,7 +13,6 @@ properties:
 
   peripheral-id:
     type: int
-    required: false
     description: peripheral ID
 
   # Note: Not all SoC series support setting individual pin location. If this

dts/bindings/serial/zephyr,cdc-acm-uart.yaml

@@ -15,11 +15,9 @@ properties:
     default: 1024
     description: |
       Size of the virtual CDC ACM UART TX FIFO
-    required: false
 
   rx-fifo-size:
     type: int
     default: 1024
     description: |
       Size of the virtual CDC ACM UART RX FIFO
-    required: false

dts/bindings/spi/nxp,s32-spi.yaml

@@ -34,13 +34,11 @@ properties:
 
   slave:
     type: boolean
-    required: false
     description: |
       Select if the SPI module is intended to be used in slave mode.
 
   spi-sck-cs-delay:
     type: int
-    required: false
     description: |
       A delay in nanoseconds between the stop of clock signal and
       deactivating Chip Select at the stop of transfer. If CS remains
@@ -51,7 +49,6 @@ properties:
 
   spi-cs-sck-delay:
     type: int
-    required: false
     description: |
       A delay in nanoseconds between activating Chip Select and the start
       of clock signal at the start of transfer. If CS remains asserted
@@ -62,7 +59,6 @@ properties:
 
   spi-cs-cs-delay:
     type: int
-    required: false
     description: |
       A delay in nanoseconds between deactivating Chip Select at the stop
       of previous transfer and activating Chip Select at the start of

dts/bindings/usb/maxim,max3421e_spi.yaml

@@ -19,7 +19,6 @@ properties:
 
   reset-gpios:
     type: phandle-array
-    required: false
     description: |
       RESET pin of MAX3421E, active low.
       If connected directly the MCU pin should be configured

tests/subsys/pm/power_states_api/dts/bindings/test-power-states-api.yaml

@@ -10,5 +10,4 @@ compatible: "test-power-states-api"
 properties:
   cpu-power-states:
     type: phandles
-    required: false
     description: List of power management states supported by this cpu.