ARM: dts: imx: align watchdog node name with dtschema

The dtschema expects watchdog device node name to be "watchdog":

  arch/arm/boot/dts/imx31-bug.dt.yaml: wdog@53fdc000:
    $nodename:0: 'wdog@53fdc000' does not match '^watchdog(@.*|-[0-9a-f])?$'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx25.dtsi

@@ -525,7 +525,7 @@ sdma: sdma@53fd4000 {
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx25.bin";
 			};
 
-			wdog@53fdc000 {
+			watchdog@53fdc000 {
 				compatible = "fsl,imx25-wdt", "fsl,imx21-wdt";
 				reg = <0x53fdc000 0x4000>;
 				clocks = <&clks 126>;

arch/arm/boot/dts/imx27.dtsi

@@ -99,7 +99,7 @@ dma: dma@10001000 {
 				#dma-channels = <16>;
 			};
 
-			wdog: wdog@10002000 {
+			wdog: watchdog@10002000 {
 				compatible = "fsl,imx27-wdt", "fsl,imx21-wdt";
 				reg = <0x10002000 0x1000>;
 				interrupts = <27>;

arch/arm/boot/dts/imx31.dtsi

@@ -315,10 +315,11 @@ rtc: rtc@53fd8000 {
 				clock-names = "ref", "ipg";
 			};
 
-			wdog: wdog@53fdc000 {
+			wdog: watchdog@53fdc000 {
 				compatible = "fsl,imx31-wdt", "fsl,imx21-wdt";
 				reg = <0x53fdc000 0x4000>;
 				clocks = <&clks 41>;
+				interrupts = <55>;
 			};
 
 			pwm: pwm@53fe0000 {

arch/arm/boot/dts/imx35.dtsi

@@ -294,7 +294,7 @@ sdma: sdma@53fd4000 {
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx35.bin";
 			};
 
-			wdog: wdog@53fdc000 {
+			wdog: watchdog@53fdc000 {
 				compatible = "fsl,imx35-wdt", "fsl,imx21-wdt";
 				reg = <0x53fdc000 0x4000>;
 				clocks = <&clks 74>;

arch/arm/boot/dts/imx50.dtsi

@@ -267,7 +267,7 @@ gpio4: gpio@53f90000 {
 					      <&iomuxc 20 140 11>;
 			};
 
-			wdog1: wdog@53f98000 {
+			wdog1: watchdog@53f98000 {
 				compatible = "fsl,imx50-wdt", "fsl,imx21-wdt";
 				reg = <0x53f98000 0x4000>;
 				interrupts = <58>;

arch/arm/boot/dts/imx51.dtsi

@@ -370,14 +370,14 @@ kpp: kpp@73f94000 {
 				status = "disabled";
 			};
 
-			wdog1: wdog@73f98000 {
+			wdog1: watchdog@73f98000 {
 				compatible = "fsl,imx51-wdt", "fsl,imx21-wdt";
 				reg = <0x73f98000 0x4000>;
 				interrupts = <58>;
 				clocks = <&clks IMX5_CLK_DUMMY>;
 			};
 
-			wdog2: wdog@73f9c000 {
+			wdog2: watchdog@73f9c000 {
 				compatible = "fsl,imx51-wdt", "fsl,imx21-wdt";
 				reg = <0x73f9c000 0x4000>;
 				interrupts = <59>;

arch/arm/boot/dts/imx53.dtsi

@@ -427,14 +427,14 @@ kpp: kpp@53f94000 {
 				status = "disabled";
 			};
 
-			wdog1: wdog@53f98000 {
+			wdog1: watchdog@53f98000 {
 				compatible = "fsl,imx53-wdt", "fsl,imx21-wdt";
 				reg = <0x53f98000 0x4000>;
 				interrupts = <58>;
 				clocks = <&clks IMX5_CLK_DUMMY>;
 			};
 
-			wdog2: wdog@53f9c000 {
+			wdog2: watchdog@53f9c000 {
 				compatible = "fsl,imx53-wdt", "fsl,imx21-wdt";
 				reg = <0x53f9c000 0x4000>;
 				interrupts = <59>;