dt-bindings: can: mpfs: document resets

The CAN cores on Polarfire SoC both have a reset. The platform firmware
brings both cores out of reset, but the linux driver must use them
during normal operation. The resets should have been made required, but
this is one of the things that can happen when the binding is written
without driver support.

Fixes: c878d518d7 ("dt-bindings: can: mpfs: document the mpfs CAN controller")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20251121-sample-footsore-743d81772efc@spud
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml

@@ -32,11 +32,15 @@ properties:
       - description: AHB peripheral clock
       - description: CAN bus clock
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
+  - resets
 
 additionalProperties: false
 
@@ -46,6 +50,7 @@ examples:
         compatible = "microchip,mpfs-can";
         reg = <0x2010c000 0x1000>;
         clocks = <&clkcfg 17>, <&clkcfg 37>;
+        resets = <&clkcfg 17>;
         interrupt-parent = <&plic>;
         interrupts = <56>;
     };