[automerger skipped] Revert "mm-video-v4l2: Protect buffer access and increase...

[automerger skipped] Revert "mm-video-v4l2: Protect buffer access and increase input buffer size" skipped: 53f90b75 am: c89371f5  -s ours am: 119d3cd2  -s ours
am: 8d1e3fb3  -s ours

Change-Id: I7dea0669a98702cd18c6001ad829511caba06060