ARM: dts: n900: Use linux input defines instead hardcoded constants

This makes DTS structure more readable.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-n900.dts

@@ -65,45 +65,45 @@ gpio_keys {
 		camera_lens_cover {
 			label = "Camera Lens Cover";
 			gpios = <&gpio4 14 GPIO_ACTIVE_LOW>; /* 110 */
-			linux,input-type = <5>; /* EV_SW */
-			linux,code = <0x09>; /* SW_CAMERA_LENS_COVER */
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_CAMERA_LENS_COVER>;
 			wakeup-source;
 		};
 
 		camera_focus {
 			label = "Camera Focus";
 			gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; /* 68 */
-			linux,code = <0x210>; /* KEY_CAMERA_FOCUS */
+			linux,code = <KEY_CAMERA_FOCUS>;
 			wakeup-source;
 		};
 
 		camera_capture {
 			label = "Camera Capture";
 			gpios = <&gpio3 5 GPIO_ACTIVE_LOW>; /* 69 */
-			linux,code = <0xd4>; /* KEY_CAMERA */
+			linux,code = <KEY_CAMERA>;
 			wakeup-source;
 		};
 
 		lock_button {
 			label = "Lock Button";
 			gpios = <&gpio4 17 GPIO_ACTIVE_LOW>; /* 113 */
-			linux,code = <0x98>; /* KEY_SCREENLOCK */
+			linux,code = <KEY_SCREENLOCK>;
 			wakeup-source;
 		};
 
 		keypad_slide {
 			label = "Keypad Slide";
 			gpios = <&gpio3 7 GPIO_ACTIVE_LOW>; /* 71 */
-			linux,input-type = <5>; /* EV_SW */
-			linux,code = <0x0a>; /* SW_KEYPAD_SLIDE */
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_KEYPAD_SLIDE>;
 			wakeup-source;
 		};
 
 		proximity_sensor {
 			label = "Proximity Sensor";
 			gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>; /* 89 */
-			linux,input-type = <5>; /* EV_SW */
-			linux,code = <0x0b>; /* SW_FRONT_PROXIMITY */
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_FRONT_PROXIMITY>;
 		};
 	};