HID: Microsoft Win8 Wireless Radio Controls cleanup

Use a better URL for the HUTRR40 Radio HID Usages documentation and use the
HID_GD_WIRELESS_RADIO_CTLS define rather then hardcoding a check for
0x0001000c.

Fixes: 61df56bef9 ("HID: Add mapping for Microsoft Win8 Wireless Radio Controls extensions")
Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 412040b..ccdff1e 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -658,7 +658,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 
 		case HID_GD_RFKILL_BTN:
 			/* MS wireless radio ctl extension, also check CA */
-			if (field->application == 0x0001000c) {
+			if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
 				map_key_clear(KEY_RFKILL);
 				/* We need to simulate the btn release */
 				field->flags |= HID_MAIN_ITEM_RELATIVE;