HID: wiimote: add Classic Controller extension

Add a new extension module for the classic controller so we get hotplug
support for this device. It is mostly the same as the old static classic
controller parser.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --cc drivers/hid/hid-wiimote-core.c
Simple merge

diff --cc drivers/hid/hid-wiimote-modules.c
Simple merge

diff --cc drivers/hid/hid-wiimote.h
Simple merge