The FILS realm scan filter validates the fils realm
provided in connect request against the realm present in the
fils indication element. But according to the 802.11 standard
the AP can advertise the realm count as 0 and choose not
to advertise any realm ID. So the connection to that AP
fails as the BSSID gets filtered from scan results during
candidate selection due to realm mismatch.
Allow connection with FILS AP when the AP doesn't advertise
realm
Change-Id: I7fbaf27a9ba346e105af44d77318c485f55a74ab
CRs-Fixed: 3341993
489c00957c