gpio: amd-fch: Set proper output level for direction_output

Current amd_fch_gpio_direction_output implementation ignores the value
argument, fix it so direction_output will set proper output level.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>