arm: dts: exynos4: fix the device-tree compile warning

After updating dtc-1.4.5 version, there are too many warning.
This patch is to fix about exynos4 series.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/dts/exynos4x12.dtsi b/arch/arm/dts/exynos4x12.dtsi
index b977288..ca4f371 100644
--- a/arch/arm/dts/exynos4x12.dtsi
+++ b/arch/arm/dts/exynos4x12.dtsi
@@ -63,12 +63,14 @@
 	pinctrl_0: pinctrl@11400000 {
 		compatible = "samsung,exynos4x12-pinctrl";
 		reg = <0x11400000 0x1000>;
+		interrupt-parent = <&gic>;
 		interrupts = <0 47 0>;
 	};
 
 	pinctrl_1: pinctrl@11000000 {
 		compatible = "samsung,exynos4x12-pinctrl";
 		reg = <0x11000000 0x1000>;
+		interrupt-parent = <&gic>;
 		interrupts = <0 46 0>;
 
 		wakup_eint: wakeup-interrupt-controller {
@@ -88,12 +90,14 @@
 	pinctrl_3: pinctrl@106E0000 {
 		compatible = "samsung,exynos4x12-pinctrl";
 		reg = <0x106E0000 0x1000>;
+		interrupt-parent = <&gic>;
 		interrupts = <0 72 0>;
 	};
 
 	g2d@10800000 {
 		compatible = "samsung,exynos4212-g2d";
 		reg = <0x10800000 0x1000>;
+		interrupt-parent = <&gic>;
 		interrupts = <0 89 0>;
 		clocks = <&clock 177>, <&clock 277>;
 		clock-names = "sclk_fimg2d", "fimg2d";