msm: camera2: Enhance processed divert in cpp driver.

The processed divert frames from cpp driver can be queued back
to free queue or queued in done queue. This change enhances
cpp driver to support both modes of operation.

Change-Id: I2ec08bd9c25fdb1db089d974c935e97898840e39
Signed-off-by: Rajakumar Govindaram <rajakuma@codeaurora.org>