msm: ais: Camera clock voting fixes for LA XO

AIS camera voting on VFE and ISPIF clocks cause XO shutdown failure.
So, add new AIS manager driver, to control AIS camera clock votes.
Also add a new method in early camera driver to turn on/off clocks
when it's needed.

Change-Id: I43090b51cb29ca9de62dfa191f77b7aa9dae8613
Signed-off-by: Rahul Sharma <sharah@codeaurora.org>