Add phy driver for the Rockchip DisplayPort PHY module. This
is required to get DisplayPort working in Rockchip SoCs.
Signed-off-by: NYakir Yang <ykk@rock-chips.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>