arm: dts: add watchdog device to NPCM750 device tree

Add watchdog device node to a common device tree for all Nuvoton
NPCM750 BMCs and a board specific device tree for the NPCM750 (Poleg)
evaluation board.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/nuvoton-npcm750-evb.dts

@@ -18,6 +18,10 @@ memory {
 	};
 };
 
+&watchdog1 {
+	status = "okay";
+};
+
 &serial0 {
 	status = "okay";
 };

arch/arm/boot/dts/nuvoton-npcm750.dtsi

@@ -125,6 +125,30 @@ timer0: timer@8000 {
 				clocks = <&clk 15>;
 			};
 
+			watchdog0: watchdog@801C {
+				compatible = "nuvoton,npcm750-wdt";
+				interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+				reg = <0x801C 0x4>;
+				status = "disabled";
+				clocks = <&clk 5>;
+			};
+
+			watchdog1: watchdog@901C {
+				compatible = "nuvoton,npcm750-wdt";
+				interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+				reg = <0x901C 0x4>;
+				status = "disabled";
+				clocks = <&clk 5>;
+			};
+
+			watchdog2: watchdog@a01C {
+				compatible = "nuvoton,npcm750-wdt";
+				interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+				reg = <0xa01C 0x4>;
+				status = "disabled";
+				clocks = <&clk 5>;
+			};
+
 			serial0: serial@1000 {
 				compatible = "ns16550a";
 				reg = <0x1000 0x1000>;