dt-bindings: watchdog: fsl-imx7ulp-wdt: Add i.MX94 support

Add compatible string "fsl,imx94-wdt" for the i.MX94 chip, which is
backward compatible with i.MX93. Set it to fall back to "fsl,imx93-wdt".

Signed-off-by: Frank Li <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: nxpfrankli

Documentation/devicetree/bindings/watchdog/fsl-imx7ulp-wdt.yaml

@@ -22,6 +22,10 @@ properties:
           - const: fsl,imx8ulp-wdt
           - const: fsl,imx7ulp-wdt
       - const: fsl,imx93-wdt
+      - items:
+          - enum:
+              - fsl,imx94-wdt
+          - const: fsl,imx93-wdt
 
   reg:
     maxItems: 1