Currently, FW diag logs, management frames and stats responses are
processed in worker context. Because of this, there is a possible
out of memory scenario when there are huge number of diag events
waiting in work queue.
To address this, process diag events in a separate worker thread and
set the limit for the number of diag events that can be queued in
work queue.
Change-Id: Ie6e5b905a3b591cf724cd6b024bec0612f9e2e0c
CRs-Fixed: 2818013
b130521bd3