ARM: dts: uniphier: Rename gpio-hog node

According to gpio-hog schema, should add the suffix "-hog" to the node
names including gpio-hog to fix the following warning.

  uniphier-pro4-ref.dtb: gpio@55000000: 'xirq2' does not match any of the regexes: '^.+-hog(-[0-9+)?$', 'pinctrl-[0-9]+'
      From schema: Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.yaml

This applies to the devicetree for LD4, LD6b, Pro4 and sLD8 SoCs.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20220913042249.4708-5-hayashi.kunihiko@socionext.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/uniphier-ld4-ref.dts

@@ -56,7 +56,7 @@ &serial3 {
 };
 
 &gpio {
-	xirq1 {
+	xirq1-hog {
 		gpio-hog;
 		gpios = <UNIPHIER_GPIO_IRQ(1) 0>;
 		input;

arch/arm/boot/dts/uniphier-ld6b-ref.dts

@@ -60,7 +60,7 @@ &serial2 {
 };
 
 &gpio {
-	xirq4 {
+	xirq4-hog {
 		gpio-hog;
 		gpios = <UNIPHIER_GPIO_IRQ(4) 0>;
 		input;

arch/arm/boot/dts/uniphier-pro4-ref.dts

@@ -59,7 +59,7 @@ &serial2 {
 };
 
 &gpio {
-	xirq2 {
+	xirq2-hog {
 		gpio-hog;
 		gpios = <UNIPHIER_GPIO_IRQ(2) 0>;
 		input;

arch/arm/boot/dts/uniphier-sld8-ref.dts

@@ -56,7 +56,7 @@ &serial3 {
 };
 
 &gpio {
-	xirq0 {
+	xirq0-hog {
 		gpio-hog;
 		gpios = <UNIPHIER_GPIO_IRQ(0) 0>;
 		input;