ARM: dts: vf610: enable watchdog for Cortex-A5 dt's

During restructuring of the device tree files the watchdog was
changed to be disabled by default. However, since the watchdog
instance is dedicated to the Cortex-A5, enable the peripheral
by default in the base device tree vf500.dtsi.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/vf500.dtsi

@@ -169,3 +169,8 @@ &usbphy0 {
 &usbphy1 {
 	interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
 };
+
+&wdoga5 {
+	interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+	status = "okay";
+};

arch/arm/boot/dts/vfxxx.dtsi

@@ -184,7 +184,7 @@ adc0: adc@4003b000 {
 				status = "disabled";
 			};
 
-			wdog@4003e000 {
+			wdoga5: wdog@4003e000 {
 				compatible = "fsl,vf610-wdt", "fsl,imx21-wdt";
 				reg = <0x4003e000 0x1000>;
 				clocks = <&clks VF610_CLK_WDT>;