ARM: dts: meson8b: Add watchdog node

With this patch we add the watchdog node in the meson8b DTS file.
Signed-off-by: Carlo Caione <carlo@endlessm.com>

arch/arm/boot/dts/meson8b.dtsi

@@ -105,6 +105,12 @@ gic: interrupt-controller@c4301000 {
 			#interrupt-cells = <3>;
 		};
 
+		wdt: watchdog@c1109900 {
+			compatible = "amlogic,meson8b-wdt";
+			reg = <0xc1109900 0x8>;
+			interrupts = <0 0 1>;
+		};
+
 		timer@c1109940 {
 			compatible = "amlogic,meson6-timer";
 			reg = <0xc1109940 0x18>;