These SoC's have an extended bank of GPIO's seperate to the main
GPIO block. This patch adds the additional 5 GPIO's located in this
block which control I2C and PWMOUT.
Signed-off-by: NTony Prisk <linux@prisktech.co.nz>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Converted the existing arch-vt8500 gpio to a platform_device.
Added support for WM8505 and WM8650 GPIO controllers.
Replaced existing readl/writel calls with _relaxed variants.
Replaced existing unsigned variables with u32 to match register size.
Signed-off-by: NTony Prisk <linux@prisktech.co.nz>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>