Rockchip have three clocks for dp controller, we leave pclk_edp
to analogix_dp driver control, and keep the sclk_edp_24m and
sclk_edp in platform driver.
(am from https://patchwork.kernel.org/patch/8615371/)
Change-Id: Ibe22447ab881b7421e999479cbdfd529d183f6b4
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>