PCI: tegra: Switch to using devm_fwnode_gpiod_get

PCI: tegra: Switch to using devm_fwnode_gpiod_get

[devm_]gpiod_get_from_of_node in drivers usage should be limited
so that gpiolib can be cleaned up; let's switch to the generic device
property API.

It may even help with handling secondary fwnodes when gpiolib is taught
to handle gpios described by swnodes.

Link: https://lore.kernel.org/r/20220903-gpiod_get_from_of_node-remove-v1-1-b29adfb27a6c@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[lpieralisi@kernel.org: commit log]
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>