arm64: dts: marvell: fix watchdog unit address in Armada AP806

This fixes the following DTC warning:

  Warning (simple_bus_reg): Node /ap806/config-space@f0000000/watchdog@600000 simple-bus unit address format error, expected "610000"
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-ap806.dtsi

@@ -241,7 +241,7 @@ uart1: serial@512100 {
 
 			};
 
-			watchdog: watchdog@600000 {
+			watchdog: watchdog@610000 {
 				compatible = "arm,sbsa-gwdt";
 				reg = <0x610000 0x1000>, <0x600000 0x1000>;
 				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;