ARM: dts: AM33XX: Use existing constants for GPIOs

Use standard GPIO constants to enhance the readability of DT GPIOs.

Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index 83ded8e..16d17d6 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -144,26 +144,26 @@
 
 		led@1 {
 			label = "evmsk:green:usr0";
-			gpios = <&gpio1 4 0>;
+			gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
 			default-state = "off";
 		};
 
 		led@2 {
 			label = "evmsk:green:usr1";
-			gpios = <&gpio1 5 0>;
+			gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
 			default-state = "off";
 		};
 
 		led@3 {
 			label = "evmsk:green:mmc0";
-			gpios = <&gpio1 6 0>;
+			gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "mmc0";
 			default-state = "off";
 		};
 
 		led@4 {
 			label = "evmsk:green:heartbeat";
-			gpios = <&gpio1 7 0>;
+			gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "heartbeat";
 			default-state = "off";
 		};
@@ -177,26 +177,26 @@
 		switch@1 {
 			label = "button0";
 			linux,code = <0x100>;
-			gpios = <&gpio2 3 0>;
+			gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
 		};
 
 		switch@2 {
 			label = "button1";
 			linux,code = <0x101>;
-			gpios = <&gpio2 2 0>;
+			gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
 		};
 
 		switch@3 {
 			label = "button2";
 			linux,code = <0x102>;
-			gpios = <&gpio0 30 0>;
+			gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
 			gpio-key,wakeup;
 		};
 
 		switch@4 {
 			label = "button3";
 			linux,code = <0x103>;
-			gpios = <&gpio2 5 0>;
+			gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
 		};
 	};
 };