qcacld-3.0: Add support to dynamically enable roaming in STA+STA

Currently in STA+STA scenario roaming is enabled on the
first connected STA1 and is enabled on the other STA2 on
STA1 disconnection. This change adds support to dynamically
enable or disable roaming on any STA.

Change-Id: I34dc2730fb38193ea3dd0ec35c79df233f270913
CRs-Fixed: 2520827
17 files changed