ARM: dts: uniphier: add GPIO hog definition

Interrupt lines from on-board devices are connected to the GPIO
controller.  Add GPIO hogging so that the corresponding GPIO line
is automatically requested.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

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

@@ -53,6 +53,14 @@
 	status = "okay";
 };
 
+&gpio {
+	xirq1 {
+		gpio-hog;
+		gpios = <121 0>;
+		input;
+	};
+};
+
 &i2c0 {
 	status = "okay";
 };