dts: bindings: can: transciever: allow specififying minumum bitrate

Some CAN transceivers have a lower limit on their supported bitrate. Add an
optional "min-bitrate" for specifying this limit via devicetree.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>

dts/bindings/can/can-controller.yaml

@@ -46,6 +46,11 @@ child-binding:
       };
 
   properties:
+    min-bitrate:
+      type: int
+      description: |
+        The minimum bitrate supported by the CAN transceiver in bits/s.
+
     max-bitrate:
       type: int
       required: true

dts/bindings/phy/can-transceiver.yaml

@@ -6,6 +6,11 @@
 include: phy-controller.yaml
 
 properties:
+  min-bitrate:
+    type: int
+    description: |
+      The minimum bitrate supported by the CAN transceiver in bits/s.
+
   max-bitrate:
     type: int
     required: true