msm: camera: vote for AHB clocks for camera clients

AHB clock is needed to access the hardware registers.
Consolidate all the votes from clients and vote for
the maximum supported ahb clocks.

Change-Id: Iac5ff506b3d272eb183c13ab30203207a7dfa364
Signed-off-by: Lakshmi Narayana Kalavala <lkalaval@codeaurora.org>
Signed-off-by: Rajesh Bondugula <rajeshb@codeaurora.org>