Input: xpad - add X-Box Adaptive XBox button

Adaptive controller sets 0x02 bit for this button, all others set 0x01
so presence of either is used for BTN_MODE.

Signed-off-by: Nate Yocom <nate@yocom.org>
Tested-by: Bastien Nocera <hadess@hadess.net>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20220908173930.28940-3-nate@yocom.org


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>