qcacld-3.0: Failed to roam to all band after dual sta enabled

For dual sta case, if vdev0 disconnected before vdev2 disconnected, vdev0
PCL cmd retained vdev level, after vdev0 reconnected first, just allowed
intra band in PCL, only can roam in intra band.
Fix: When vdev disconnect, reset it's PCL cmd to pdev level.

Change-Id: I3ed3ec398cfe1a17d07ce716c27026b9660305bd
CRs-Fixed: 2960194

components/umac/mlme/connection_mgr/core/src/wlan_cm_roam_offload.c

@@ -3106,6 +3106,7 @@ cm_roam_switch_to_deinit(struct wlan_objmgr_pdev *pdev,
 
 	mlme_set_roam_state(psoc, vdev_id, WLAN_ROAM_DEINIT);
 	mlme_clear_operations_bitmap(psoc, vdev_id);
+	wlan_cm_roam_activate_pcl_per_vdev(psoc, vdev_id, false);
 
 	/* In case of roaming getting disabled due to
 	 * REASON_ROAM_SET_PRIMARY reason, don't enable roaming on

components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_api.c

@@ -1716,6 +1716,9 @@ void wlan_cm_init_occupied_ch_freq_list(struct wlan_objmgr_pdev *pdev,
 
 	dual_sta_roam_active =
 			wlan_mlme_get_dual_sta_roaming_enabled(psoc);
+	dual_sta_roam_active = dual_sta_roam_active &&
+			       policy_mgr_mode_specific_connection_count
+				(psoc, PM_STA_MODE, NULL) >= 2;
 
 	qdf_list_peek_front(list, &cur_lst);
 	while (cur_lst) {