1. Upper layer sends QCA_WLAN_VENDOR_ATTR_LINK_STATE_CONTROL_MODE
vendor command to configure control mode in host/fw.
2. Host receives GET_ML_LINK_STATE driver command to return
control mode (configured at step 1) to upper layer.
Host should reply as a response of GET_ML_LINK_STATE with same
value of control mode configured at step 1 to upper layer.
Change-Id: I3b5cb3bec31957ee8479d7f366d1e360421a7573
CRs-Fixed: 3601735