arm64: dts: mediatek: add watchdog to MT6797

This patch adds the watchdog driver to the MT6797 SoC.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt6797.dtsi

@@ -147,6 +147,11 @@ scpsys: scpsys@10006000 {
 		infracfg = <&infrasys>;
 	};
 
+	watchdog: watchdog@10007000 {
+		compatible = "mediatek,mt6797-wdt", "mediatek,mt6589-wdt";
+		reg = <0 0x10007000 0 0x100>;
+	};
+
 	apmixedsys: apmixed@1000c000 {
 		compatible = "mediatek,mt6797-apmixedsys";
 		reg = <0 0x1000c000 0 0x1000>;