dt-bindings: watchdog: sama5d4-wdt: add compatible for sama7g5-wdt

This driver is also compatible with the watchdog on sama7g5 SoC.
Add the corresponding compatible string to the binding.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210527100120.266796-3-eugen.hristev@microchip.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Documentation/devicetree/bindings/watchdog/atmel,sama5d4-wdt.yaml

@@ -17,6 +17,7 @@ properties:
     enum:
       - atmel,sama5d4-wdt
       - microchip,sam9x60-wdt
+      - microchip,sama7g5-wdt
 
   reg:
     maxItems: 1