gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION

gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION

commit d25e8fdebdad84219b498873300b7f11dd915b88 upstream.

The original commit appears to have the logic reversed in
amd_fch_gpio_get_direction. Also confirmed by observing the value of
"direction" in the sys tree.

Signed-off-by: Ed Wildgoose <lists@wildgooses.com>
Fixes: e09d168f13f0 ("gpio: AMD G-Series PCH gpio driver")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>