msm-camera: Validate VFE command id

Validating VFE command id to avoid memory related corruptions.

Change-Id: I35ce2ed8514e0112b996ce05be6e6f505cdb6e60
CRs-Fixed: 563542
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>
defconfig: remove support for /dev/mem and /dev/kmem on perf builds

Keeping /dev/mem and /dev/kmem exposed to userspace allows userspace
to peek/poke to these areas and is a security risk. Remove support for
/dev/mem and /dev/kmem on perf builds.

Change-Id: I630101c40c806cc6682573d070964d79ca36bd57
CRs-Fixed: 530719
Signed-off-by: Sarang Joshi <spjoshi@codeaurora.org>
Merge "defconfig: remove support for /dev/mem and /dev/kmem on perf builds"
Merge "msm-camera: Validate VFE command id"