dt-bindings: watchdog: sun4i: Add A100 compatible

Add a binding for A100's watchdog controller.
Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201211011934.6171-17-andre.przywara@arm.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml

@@ -21,6 +21,9 @@ properties:
       - items:
           - const: allwinner,sun50i-a64-wdt
           - const: allwinner,sun6i-a31-wdt
+      - items:
+          - const: allwinner,sun50i-a100-wdt
+          - const: allwinner,sun6i-a31-wdt
       - items:
           - const: allwinner,sun50i-h6-wdt
           - const: allwinner,sun6i-a31-wdt