Each SoCs generation has own independent gpiolib realization, so we
have no reason to keep these realizations in semiuniversal form.
Following modifications are made:
* Remove valid_mask field
* Remove ar231x_gpio_chip structure
* Rename AR2315_GPIO_CR to AR2315_GPIO_DIR
* Fix count of AR5312 GPIOs
* Simplify gpio_chip methods realization
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
SVN-Revision: 41696
a145d0410b