The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver. The gpio-mm module is migrated to the new i8255
library interface leveraging the gpio-regmap API.
Suggested-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NWilliam Breathitt Gray <william.gray@linaro.org>
Signed-off-by: NBartosz Golaszewski <bartosz.golaszewski@linaro.org>