msm: camera: common: Update AHB vote for camera drivers

As part of cpas start, all drivers will now request for
LOW_SVS as opposed to SVS. The drivers also scale the AHB
vote based on the corresponding HW's src clk voltage.

CRs-Fixed: 2507919
Change-Id: I7fd35e9dd298deb1603812f39d50e4e9390b3aac
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>