dt-bindings: watchdog: apple,wdt: Add t8122 compatible

The watchdog on the Apple silicon t8122 (M3) SoC is compatible with the
existing driver. Add "apple,t8122-wdt" as SoC specific compatible under
"apple,t8103-wdt" used by the driver.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

Documentation/devicetree/bindings/watchdog/apple,wdt.yaml

@@ -16,7 +16,9 @@ properties:
   compatible:
     oneOf:
       - items:
-          - const: apple,t6020-wdt
+          - enum:
+              - apple,t6020-wdt
+              - apple,t8122-wdt
           - const: apple,t8103-wdt
       - items:
           - enum: