Input: add KEY_BLUETOOTH and KEY_WLAN definitions

Some laptops have separate "rfkill" buttons for disabling/enabling
Bluetooth and WLAN.
Signed-off-by: NLennart Poettering <mzxreary@0pointer.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

include/linux/input.h

@@ -349,6 +349,9 @@ struct input_absinfo {
 
 #define KEY_BATTERY		236
 
+#define KEY_BLUETOOTH		237
+#define KEY_WLAN		238
+
 #define KEY_UNKNOWN		240
 
 #define BTN_MISC		0x100