Iterate through all the active links in each adapter to find
if any STA is in connected state or not. Reuse the iterator
API in hdd_is_any_sta_connected().
1) hdd_get_first_connected_sta_vdev_id()
2) hdd_is_any_sta_connected()
Change-Id: I1edf96d4f6ee03905a4d9ec2f92327a27d71ac9a
CRs-Fixed: 3522308