arm: dts: add watchdog-node for mt7622

adding a watchdog-node to mt7622 dtsi

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
diff --git a/arch/arm/dts/mt7622.dtsi b/arch/arm/dts/mt7622.dtsi
index d0783bc..fec0716 100644
--- a/arch/arm/dts/mt7622.dtsi
+++ b/arch/arm/dts/mt7622.dtsi
@@ -142,6 +142,11 @@
 		reg = <0x10212000 0x800>;
 	};
 
+	wdt-reboot {
+		compatible = "wdt-reboot";
+		wdt = <&watchdog>;
+	};
+
 	gic: interrupt-controller@10300000 {
 		compatible = "arm,gic-400";
 		interrupt-controller;