Call enable/disable link APIs from connect/disconnect/roam etc.
Cleanup policy_mgr_handle_sap_mlo_sta_concurrency and
policy_mgr_handle_sap_plus_ml_sta_connect API as
policy_mgr_handle_sap_cli_go_ml_sta_up_csa and
policy_mgr_re_enable_ml_sta_on_p2p_sap_down will take care of
ML STA + SAP/P2P cases.
Also optimize policy_mgr_handle_ml_sta_link_concurrency to consider
only ML STA+STA cases and called from connect/disconnect/roam etc.
Change-Id: Ib8b9b2a490832ea5cbe1d86e58009e1437b331b9
CRs-Fixed: 3189685
12e3558871