Revert "msm: camera: Skip cache CPU SYNC for non-secure buffers"

This reverts commit 4a5eec4c.

Do cache ops during map/ummap of the buffer. This helps to
ensure cache ops happen properly.

Change-Id: I1d5ae6c3c8273b9252175c73f44e362c99b3edac
Signed-off-by: Trishansh Bhardwaj <tbhardwa@codeaurora.org>