Input: matrix_keypad - switch to gpiod API and generic device properties

gpiod API and generic device properties work with software nodes and
static properties, which will allow removing platform data support
from the driver, simplifying and streamlining the code.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240805014710.1961677-3-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: dtor