msm: camera: cci: add out of boundary check

Cci transactions are optimized by comparing i2c addresses
in consecutive commands using pointer to command.
Add boundary check to ensure that pointers to command do
not go out of bounds.

Change-Id: Id835bf3276c91cd80c3ef59e6648a6d6792d2567
Signed-off-by: Ravi Kishore Tanuku <rktanuku@codeaurora.org>
Signed-off-by: Xu Han <hanxu@codeaurora.org>