Input: cap11xx - add reset gpio support

Some CAP11xx devices (CAP1126/CAP1188) have a dedicated RESET pin.
Add hardware reset operation to improve device reliability and
ensure proper initialization on probe.

Signed-off-by: Jun Yan <jerrysteve1101@gmail.com>
Link: https://patch.msgid.link/20260617150318.753148-7-jerrysteve1101@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>