This patch adds support for the GPIO controller used by
Mellanox BlueField 2 SOCs.
Signed-off-by: NAsmaa Mnebhi <Asmaa@mellanox.com>
Link: https://lore.kernel.org/r/1680de9eb6d2b8855228dde9a2dd065f0dcbe1fb.1583182325.git.Asmaa@mellanox.comSigned-off-by: NLinus Walleij <linus.walleij@linaro.org>