arm: mvebu: x530: Enable watchdog in SPL and U-Boot

Enable the hardware watchdog to guard against system lock ups when
running in the SPL or U-Boot. Stop the watchdog just before booting so
that the OS can re-enable it if needed.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi b/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi
index 7074a73..79b694c 100644
--- a/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi
+++ b/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi
@@ -11,3 +11,7 @@
 &uart0 {
 	u-boot,dm-pre-reloc;
 };
+
+&watchdog {
+	u-boot,dm-pre-reloc;
+};