Currently, VDEV connected links bitmap is not being updated properly
for link VDEVs. Because of this, during the disconnect assoc peer
is being deleted first instead of link VDEV peer.
To address this, update VDEV connected links bitmap after STA link
connection complete.
Change-Id: Id8465948fbb3af2f063e04ec9403cb4e3a6f98d8
CRs-Fixed: 3125636