arm64: dts: berlin4ct: add watchdog nodes

The Marvell Berlin BG4CT has 3 watchdogs which are compatible with the
snps,dw-wdt driver sit in the sysmgr domain. This patch adds the
corresponding device tree nodes.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

arch/arm64/boot/dts/marvell/berlin4ct.dtsi

@@ -251,6 +251,29 @@ sic: interrupt-controller@1000 {
 				interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
+			wdt0: watchdog@3000 {
+				compatible = "snps,dw-wdt";
+				reg = <0x3000 0x100>;
+				clocks = <&osc>;
+				interrupts = <0>;
+			};
+
+			wdt1: watchdog@4000 {
+				compatible = "snps,dw-wdt";
+				reg = <0x4000 0x100>;
+				clocks = <&osc>;
+				interrupts = <1>;
+				status = "disabled";
+			};
+
+			wdt2: watchdog@5000 {
+				compatible = "snps,dw-wdt";
+				reg = <0x5000 0x100>;
+				clocks = <&osc>;
+				interrupts = <2>;
+				status = "disabled";
+			};
+
 			sm_gpio0: gpio@8000 {
 				compatible = "snps,dw-apb-gpio";
 				reg = <0x8000 0x400>;