Add board support with device tree for Hisilicon Hi3620 SoC platform.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@linaro.org>
[khilman: fix checkpatch errors]
[khilman: fold in patch which selects GPIO in Kconfig]
Signed-off-by: NKevin Hilman <khilman@linaro.org>