HID: wiimote: add Nunchuk support

This moves the nunchuk parser over to an extension module. This allows to
make use of hotplugged Nunchuks instead of the old static parser.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h
index 8d314ae..3414e4c 100644
--- a/drivers/hid/hid-wiimote.h
+++ b/drivers/hid/hid-wiimote.h
@@ -80,6 +80,7 @@
 enum wiimote_exttype {
 	WIIMOTE_EXT_NONE,
 	WIIMOTE_EXT_UNKNOWN,
+	WIIMOTE_EXT_NUNCHUK,
 	WIIMOTE_EXT_BALANCE_BOARD,
 	WIIMOTE_EXT_NUM,
 };