The AB8500 GPIO driver has been un-BROKEN and rewritten as a pinctrl
driver. Now that it's back in use, let's ensure that it's available
when booting Snowball with Device Tree enabled.
Cc: arm@kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>