rfkill: add the WiMAX radio type

Teach rfkill about wimax radios.

Had to define a KEY_WIMAX as a 'key for disabling only wimax radios',
as other radio technologies have. This makes sense as hardware has
specific keys for disabling specific radios.

The RFKILL enabling part is, otherwise, a copy and paste of any other
radio technology.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/input.h b/include/linux/input.h
index 2075d6d..056a17a 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -371,6 +371,8 @@
 #define KEY_BRIGHTNESS_ZERO	244	/* brightness off, use ambient */
 #define KEY_DISPLAY_OFF		245	/* display device to off state */
 
+#define KEY_WIMAX		246
+
 #define BTN_MISC		0x100
 #define BTN_0			0x100
 #define BTN_1			0x101