While SAP doing CSA, NAN enabled, SAP tries to do CSA to force SCC with
NAN in scheduler thread, since last CSA in progress, scheduler thread is
blocked to wait last CSA finished, CSA timer can't be handled in scheduler
thread any more, last CSA can't finish, deadlock happens until timeout.
To fix it, let SAP force scc with NAN logic run in work thread instead of
scheduler thread.
Change-Id: Icb774ffcfc70f279ba3b18b3c5cd4a169180e99b
CRs-Fixed: 3344905
8b9b29fbc0