ARM: dts: Use active low flag for gpio-keys on Origen

Commit f447ed8b ("gpio: samsung: add flags specifier to
device-tree binding") adds a flag to represent active low state
for gpio line. Since gpio-keys on Origen board are active low,
using this flag to represent the same.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4210-origen.dts

@@ -62,31 +62,31 @@
 
 		up {
 			label = "Up";
-			gpios = <&gpx2 0 0 0 2>;
+			gpios = <&gpx2 0 0 0x10000 2>;
 			linux,code = <103>;
 		};
 
 		down {
 			label = "Down";
-			gpios = <&gpx2 1 0 0 2>;
+			gpios = <&gpx2 1 0 0x10000 2>;
 			linux,code = <108>;
 		};
 
 		back {
 			label = "Back";
-			gpios = <&gpx1 7 0 0 2>;
+			gpios = <&gpx1 7 0 0x10000 2>;
 			linux,code = <158>;
 		};
 
 		home {
 			label = "Home";
-			gpios = <&gpx1 6 0 0 2>;
+			gpios = <&gpx1 6 0 0x10000 2>;
 			linux,code = <102>;
 		};
 
 		menu {
 			label = "Menu";
-			gpios = <&gpx1 5 0 0 2>;
+			gpios = <&gpx1 5 0 0x10000 2>;
 			linux,code = <139>;
 		};
 	};