[automerger skipped] Revert "mm-video-v4l2: Protect buffer access and increase input buffer size" skipped: 53f90b755f am: c89371f526  -s ours
am: 119d3cd235  -s ours

Change-Id: I8d7c2c54c9fe7bf9bb61ed1b65d78ab89acb574e