Input: xpad - map "Select" button on Microsoft Xbox One controller

Add "Select" button input capability and input event mapping for
Microsoft Xbox One controller. From product site this is also referred as
"Share" button.

Signed-off-by: Chris Ye <lzye@google.com>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20210414021201.2462114-1-lzye@google.com


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