msm: camera: Improve bus performance

ISP unified buffer is equally shared among write masters.
Reduce useable write masters to 4 to increase unified buffer
for each write master. Enable uni-buffer DDR mode to add 8K latency
buffer. Increase write master burst len to 16 to improve ISP
write efficiency.

Change-Id: If07bd01d9f09780b6c630c6f6663ee921198d7b8
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>
1 file changed