clk: msm: clock-mmss-8996: Allow setting a rate on the camss_vfe clocks

Allow setting a rate on the vfe0 and vfe1 clock sources
via the camss_vfe0_clk and camss_vfe1_clk clocks.

Change-Id: I793555a901d89decb000c5f8b47019079486de16
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>