input: hid-debug.h includes resolv_event, which is not used if DEBUG is only

       enabled in hid-core, but _is_ used when DEBUG is also enabled in hid-input.
       Mark the function with __attribute__((unused)) to silence the warning
       when only hid-core is being DEBUGged.
Signed-off-by: Adam Kropelin <akropel1@rochester.rr.com>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>

drivers/usb/input/hid-debug.h

@@ -713,7 +713,7 @@ static char **names[EV_MAX + 1] = {
 	[EV_SND] = sounds,			[EV_REP] = repeats,
 };
 
-static void resolv_event(__u8 type, __u16 code) {
+static void __attribute__((unused)) resolv_event(__u8 type, __u16 code) {
 
 	printk("%s.%s", events[type] ? events[type] : "?",
 		names[type] ? (names[type][code] ? names[type][code] : "?") : "?");