Add device tree bindings documentation and a header file
for rockchip's RK808 pmic.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NChris Zhong <zyw@rock-chips.com>
Signed-off-by: NZhang Qing <zhangqing@rock-chips.com>
Tested-by: NHeiko <heiko@sntech.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>