qcacmn: Avoid looping twice to find peers for beacon frames

Driver first try to find peer for beacon frames with addr2,
and if no peer is found it loop through peer list 2nd time
for addr1. For beacon addr1 is broadcast address and thus
peer will never be found with broadcast address.

Thus use addr1 to find peer only if addr1 is not broadcast
address.

Change-Id: I7e5c221ec7f93f878981f4eafb69935aafd64174
CRs-Fixed: 2373793