msm: camera: req_mgr: Add support for static payload in workqueue

Few drivers is using static payload for crm workqueue. This change
is to prevent release of statically allocated workqueue payload.

CRs-Fixed: 2773657
Change-Id: Id96a1dcc4b4b953cfb2ea2b5126a4f215654d8c2
Signed-off-by: Ayush Kumar <ayushkr@codeaurora.org>