dts: bindings: can: ti: tcan4x5x: add property for the nWKRQ voltage

Add boolean devicetree property for setting the voltage configuration for
the nWKRQ pin GPO buffer.

The property name was chosen to match the one used in the Linux devicetree
binding.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>

Author: henrikbrixandersen

dts/bindings/can/ti,tcan4x5x.yaml

@@ -39,6 +39,17 @@ properties:
     description: |
       GPIO connected to the TCAN4x5x nINT interrupt output. This signal is open-drain, active low.
 
+  ti,nwkrq-voltage-vio:
+    type: boolean
+    description: |
+      nWKRQ pin GPO buffer voltage rail configuration.
+
+      If set, the nWKRQ pin GPO buffer is configured as open-drain, requiring an external pull-up
+      resistor to the VIO rail.
+
+      If unset, the nWKRQ pin GPO buffer is configured as push-pull based off an internal voltage
+      rail.
+
 examples:
   - |
     &spi0 {
@@ -52,6 +63,7 @@ examples:
         reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
         int-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
         bosch,mram-cfg = <0x0 15 15 5 5 0 10 10>;
+        ti,nwkrq-voltage-vio;
         status = "okay";
 
         can-transceiver {