mips: mt76xx: Add watchdog DT node to mt7628a.dtsi

Add the watchdog DT node to the DTS file.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

arch/mips/dts/mt7628a.dtsi

@@ -48,6 +48,17 @@
 			mask = <0x1>;
 		};
 
+		watchdog: watchdog@100 {
+			compatible = "ralink,mt7628a-wdt", "mediatek,mt7621-wdt";
+			reg = <0x100 0x30>;
+
+			resets = <&resetc 8>;
+			reset-names = "wdt";
+
+			interrupt-parent = <&intc>;
+			interrupts = <24>;
+		};
+
 		intc: interrupt-controller@200 {
 			compatible = "ralink,rt2880-intc";
 			reg = <0x200 0x100>;