camera_v2: JPEG 1.0: add alignment check on register offset

Adds a check on the offset value in msm_jpeg_hw_cmd structure
for correct alignment.

CRs-fixed: 576560
Signed-off-by: Kamen Kirov <kkirov@codeaurora.org>
Change-Id: I9233cf6b7b300958188d2c95fb5a2c5f7a1e9cfb