msm: camera : Add memory barrier in CCI IO calls

RTB uses memory barrier which sends the io commands
sequentially. Secondary boot disables the RTB where
io read/write are not sequential causing camera timing
issues. Configure the CCI io calls with memory barrier
to fix the issue.

CRs-Fixed: 656133.
Change-Id: I67fac6af4a846ac6f544f304972f9289abaf0783
Signed-off-by: Vivek Veenam <vveenam@codeaurora.org>