msm: camera: cpp: Avoid exposing kernel information to user space

Avoid copy_to_user for the cases that are not required.

CRs-Fixed: 1099731
Change-Id: Id7d94d26fc662f406f55fbe2f8703b3632809802
Signed-off-by: Pratap Nirujogi <pratapn@codeaurora.org>
Signed-off-by: VijayaKumar T M <vtmuni@codeaurora.org>