DT: Add documentation for gpio-xilinx

Describe gpio-xilinx binding.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Michal Simek 2013-06-03 14:31:21 +02:00 • committed by Linus Walleij
commit 6090a0fa5c