xwiishow: visualize nunchuk data
xwiishow: visualize nunchuk data

Nunchuk data is supported by libxwiimote so display it similar to existing
analog sticks and accelerometers.

Signed-off-by: David Herrmann <fb53b2ddb8d141e0cb39d7c67c2f81b6bc2eb0f7@gmail.com>

barracks510/xwiimote,barracks510/xwiimote,dvdhrm/xwiimote,dvdhrm/xwiimote,barracks510/xwiimote,AdamLuchjenbroers/xwiimote,AdamLuchjenbroers/xwiimote,barracks510/xwiimote