msm: ais: Validate packet params against cpu buffer length

Modifying validate packet in cam utils and its callers to provide cpu
buffer length which is used in validation of number of cmd buffers,
io configs and patches.

Change-Id: Ifdb627759befc93e029c4948e630ba6ce63a76ca
Signed-off-by: E V Ravi <evenka@codeaurora.org>