msm-camera: Added the  NULL check in gemini driver.

Adding NULL check for ionhandle and y_off in gemini driver files.

CRs-Fixed: 504159

Change-Id: I6d20298183bec0c3c2c16088a936ac6f7d307da4
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>
msm: vidc: Validate userspace buffer count

Makesure the number of buffers count is less than
the maximum limit to avoid structure overflow errors.

Change-Id: Icf3850de36325637ae43ac95f1c8f0f63e201d31
CRs-fixed: 563694
Signed-off-by: Pachika, Vikas Reddy <vpachi@codeaurora.org>
msm: vidc: Validate userspace buffer count before using it

Validate the number of buffers count variable before
using it to avoid structure overflow error.

Change-Id: I61582c93e0f26ec6842e437134fb8a42bdbc36ff
CRs-fixed: 563654
Signed-off-by: Pachika, Vikas Reddy <vpachi@codeaurora.org>
Merge "msm: vidc: Validate userspace buffer count"
Merge "msm: vidc: Validate userspace buffer count before using it"
Merge "msm-camera: Added the  NULL check in gemini driver."