linux-phytec-fsl

pinctrl: oxnas: Add GPIO get_direction

Implement a get_direction callback for the OXNAS GPIO driver in order
to have pin output polarity in debugfs and new userspace ABI.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>