msm: camera: add check to ensure user task wont hog CPU

If userspace provides a circular list to isp kenrel
driver through an ioctl, then dirver loops forever.
This way the task might hog the CPU in while loop.
To fix this issue, added a preset count to break
the loop after 100 iterations.

CRs-Fixed: 1064608
Change-Id: Ie896fd3da326e5e972266d8004baecf8681aea6d
Signed-off-by: VijayaKumar T M <vtmuni@codeaurora.org>
Signed-off-by: Lokesh Kumar Aakulu <lkumar@codeaurora.org>