This enables ath9k's built-in GPIO controller for all chip versions
(instead of an explicit whitelist). This also allows us to get rid of
some duplicate code between hw.c and gpio.c because hw.c already
determines the number of GPIOs.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
This folds 550-ath9k_add_ar9280_gpio_chip.patch into
548-ath9k_enable_gpio_chip.patch because the former patch only extends
code which is introduced in the latter.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
