qcacld-3.0: Consider peer mac addr also for duplicate frame detection

Currently, sequence number of the authentication frame is cached
to detect if the same frame is received again. But in SAP case,
it's possible to get authentication frame from two different
clients with the same sequence number. Host driver drops auth
frame from the second station as it is considered as a
duplicate frame. Though the driver drops the frame only if it's
a retry, it's possible to get auth frame from second client with
same sequence number and retry bit set.
Cache the client mac address along with sequence number to
avoid this.

Change-Id: I194adc9e0f90d074aef50340d2cd6c7b138cc9b5
CRs-Fixed: 2815784