msm: camera: crm: Mutliple fixes in request manager

Adds tag for camera heap id. Adds better logging across CRM. Adds return
value to indicate success/failure for destroy link info. Provides
spinlock protection for crm timer. Skips destroy device handle if destroy
link info fails. Changes memory type for crm timer to cache. Adds validity
check around cache allocation for crm timer.

Change-Id: I8868f3608f44c6296567cc8a038d61cb14413e21
Signed-off-by: Venkat Chinta <vchinta@codeaurora.org>