Export the dclk_vop_frac out, so we can set the dclk_vop as the
child of dclk_vop_frac, and then we can start to take use of
the fractional dividers.
Signed-off-by: NYakir Yang <ykk@rock-chips.com>
Signed-off-by: NChris Zhong <zyw@rock-chips.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>