dt-bindings: watchdog: fsl,scu-wdt: Document imx8qm

Add an entry for 'fsl,imx8qm-sc-wdt' as imx8qm also contains the SCU
watchdog block.

Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Oliver Graute <oliver.graute@kococonnector.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250414-imx8qm-watchdog-v2-1-449265a9da4e@bootlin.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: thom24

Documentation/devicetree/bindings/watchdog/fsl,scu-wdt.yaml

@@ -20,6 +20,7 @@ properties:
     items:
       - enum:
           - fsl,imx8dxl-sc-wdt
+          - fsl,imx8qm-sc-wdt
           - fsl,imx8qxp-sc-wdt
       - const: fsl,imx-sc-wdt