In whitelist roaming, the roam offload event is sent
for an BSSID with different SSID, however host driver
copies the connected bssid in the external auth event
to the userspace. This leads to preauth failure.
Cache the ssid from the beacon received as part of the
roam frame event before every roam auth offload event
and use that ssid for external auth events to userspace.
Change-Id: I634992baf0c98054897707aaf3b1265e17d46f04
CRs-Fixed: 3262859
20f32531a3