ARM: dts: msm: Add OPP table support for camera clocks on msm8996

Populate the OPP tables for the vfe0_clk_src, vfe1_clk_src and
cpp_clk_src clocks for use by the camera driver which relies
on the frequency to corner mappings.

CRs-Fixed: 870241
Change-Id: I4c4320ddee3e837d051d9d9311faab94edc51311
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>