msm: camera: Fix for kernel panic

check if buffer instance handle is zero while
getting pcam instance based on instance handle
in msm_mctl_reserve_free_buf function

Change-Id: Id3861c4f29fb4f7fd62ad6de6597e65c7c4f656b
Signed-off-by: manish gotefode <mgote@codeaurora.org>
msm-camera: Removing MSM_GMN_IOCTL_TEST_DUMP_REGION ioctl

Removing the MSM_GMN_IOCTL_TEST_DUMP_REGION call because this
is not used.

CRs-Fixed: 496905
Depends-on: 372524

Change-Id: I91147bbf67055351a115687a18a1172a649d5d6a
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>
Merge "msm: camera: Fix for kernel panic"
Merge "msm-camera: Removing MSM_GMN_IOCTL_TEST_DUMP_REGION ioctl"