dt-bindings: watchdog: Add rk3562 compatible

Add rockchip,rk3562-wdt for rk3562.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250506025715.33595-2-kever.yang@rock-chips.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: keveryang

Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml

@@ -28,6 +28,7 @@ properties:
               - rockchip,rk3328-wdt
               - rockchip,rk3368-wdt
               - rockchip,rk3399-wdt
+              - rockchip,rk3562-wdt
               - rockchip,rk3568-wdt
               - rockchip,rk3576-wdt
               - rockchip,rk3588-wdt