dts: Add spi bindings and nodes for lpc socs

Adds spi device tree bindings and nodes for the lpc54xxx and lpc55s6x
socs in preparation for adding a new spi driver.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

dts/arm/nxp/nxp_lpc54xxx.dtsi

@@ -82,6 +82,16 @@
 			label = "MAILBOX_0";
 			status = "disabled";
 		};
+
+		spi5: spi@40096000 {
+			compatible = "nxp,lpc-spi";
+			reg = <0x40096000 0x1000>;
+			interrupts = <19 0>;
+			label = "SPI_5";
+			status = "disabled";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 	};
 };
 

dts/arm/nxp/nxp_lpc55S6x.dtsi

@@ -96,6 +96,16 @@
 			gpio-controller;
 			#gpio-cells = <2>;
 		};
+
+		spi8: spi@5009f000 {
+			compatible = "nxp,lpc-spi";
+			reg = <0x5009f000 0x1000>;
+			interrupts = <59 0>;
+			label = "SPI_8";
+			status = "disabled";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 	};
 };
 

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

@@ -0,0 +1,21 @@
+#
+# Copyright (c) 2019, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+title: NXP LPC SPI
+
+description: >
+    This binding gives a base representation of the NXP LPC SPI controller
+
+compatible: "nxp,lpc-spi"
+
+include: spi-controller.yaml
+
+properties:
+    reg:
+      required: true
+
+    interrupts:
+      required: true