msm: camera: Add fixes to axi bandwidth voting v2 path

Adding static internal bw config to avoid memory leak during
flush. Adding fix for divide by zero errors in generic blob
handler for isp and icp. Also, adding mutex lock to avoid
data corruption while traversing node tree in cpas apply vote.

Change-Id: I4679e31e0f8953f239c969c8a7bae29b9b69f377
Signed-off-by: Mukund Madhusudan Atre <matre@codeaurora.org>