qcacld-2.0 to qcacld-3.0 propagation
IPA pending_event list keeps IPA events arrived while IPA resource
loading/unloading.
This list is freed only when TX/Rx resume/suspend OP code from FW.
This change is to limit the pending event list size and free up the
pending event list when WLAN driver is unloaded.
Change-Id: Id0489a59bd3c2b04d2faba1069df7b2244a2a730
CRs-Fixed: 937765