Add support for the RV1108 and its debug uart
* tag 'v4.13-rockchip-soc32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: rockchip: enable support for RV1108 SoC
ARM: debug: add low level debug uart for rv1108
Signed-off-by: Olof Johansson <olof@lixom.net>