Add an hdmi node, and also add hdmi endpoints to vopb and vopl
output port nodes.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com> Signed-off-by: Yakir Yang <ykk@rock-chips.com> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Tested-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de>