ARM: mvebu: Enable Armada 370/XP watchdog in the devicetree

Add the DT nodes to enable watchdog support available in Armada 370
and Armada XP SoCs.

Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi
index 6f216f0..af1f11e 100644
--- a/arch/arm/boot/dts/armada-370.dtsi
+++ b/arch/arm/boot/dts/armada-370.dtsi
@@ -215,6 +215,11 @@
 				clocks = <&coreclk 2>;
 			};
 
+			watchdog@20300 {
+				compatible = "marvell,armada-370-wdt";
+				clocks = <&coreclk 2>;
+			};
+
 			audio_controller: audio-controller@30000 {
 				compatible = "marvell,armada370-audio";
 				reg = <0x30000 0x4000>;