generic: add gpio-regmap request/free ops patch

generic: add gpio-regmap request/free ops patch

This patch is needed on bmips since it fixes issues with GPIOs not being
properly configured due to gpio_request_enable not being called on bcm63xx
devices. Therefore we can now drop the bcm63268 gpio function patch.

Backported from f5b1d340be9488af71e6522c3f10f1ebd1a35446 with the exception of
the realtek and bmips patches removal.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit f5b1d340be9488af71e6522c3f10f1ebd1a35446)