ARM: orion5x: enable pinctrl driver at SoC level

This commit declares the pinctrl device in the Orion5x 5182 Device
Tree files, and ensures that the Orion pinctrl driver is compiled.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1398202002-28530-25-git-send-email-thomas.petazzoni@free-electrons.com


Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>