Input: add the fn key to hid-debug.h

Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/usb/input/hid-debug.h

@@ -681,6 +681,7 @@ static char *keys[KEY_MAX + 1] = {
 	[KEY_SEND] = "Send",			[KEY_REPLY] = "Reply",
 	[KEY_FORWARDMAIL] = "ForwardMail",	[KEY_SAVE] = "Save",
 	[KEY_DOCUMENTS] = "Documents",
+	[KEY_FN] = "Fn",
 };
 
 static char *relatives[REL_MAX + 1] = {