ARM: dts: Use GPIO constants for flags cells in exynos4412 boards

The board DTS are using numeric values instead of the defined GPIO
constanst to express polarity, use them to make the DTS more clear.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
diff --git a/arch/arm/boot/dts/exynos4412-odroidx.dts b/arch/arm/boot/dts/exynos4412-odroidx.dts
index 679ac10..b44bb68 100644
--- a/arch/arm/boot/dts/exynos4412-odroidx.dts
+++ b/arch/arm/boot/dts/exynos4412-odroidx.dts
@@ -26,13 +26,13 @@
 		compatible = "gpio-leds";
 		led1 {
 			label = "led1:heart";
-			gpios = <&gpc1 0 1>;
+			gpios = <&gpc1 0 GPIO_ACTIVE_LOW>;
 			default-state = "on";
 			linux,default-trigger = "heartbeat";
 		};
 		led2 {
 			label = "led2:mmc0";
-			gpios = <&gpc1 2 1>;
+			gpios = <&gpc1 2 GPIO_ACTIVE_LOW>;
 			default-state = "on";
 			linux,default-trigger = "mmc0";
 		};
@@ -44,7 +44,7 @@
 		home_key {
 			interrupt-parent = <&gpx2>;
 			interrupts = <2 0>;
-			gpios = <&gpx2 2 0>;
+			gpios = <&gpx2 2 GPIO_ACTIVE_HIGH>;
 			linux,code = <KEY_HOME>;
 			label = "home key";
 			debounce-interval = <10>;
@@ -57,7 +57,7 @@
 		regulator-name = "p3v3_en";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		gpio = <&gpa1 1 1>;
+		gpio = <&gpa1 1 GPIO_ACTIVE_LOW>;
 		enable-active-high;
 		regulator-always-on;
 	};