msm-camera: Bound check num_cid from userspace in csid driver

Upper and lower bound checks are enforced for num_cid
which is passed from userspace with lower as 1 and
max of 16.

Change-Id: I69a405995d2f53c3a0b0a72b50460bebfdf38442
CRs-Fixed: 511358
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>