qcacld-3.0: Fix 4 port failed when gDualMacFeatureDisable=6

In DBS mode, gDualMacFeatureDisable can be 0, also can be
6: enable DBS for connection but disable simultaneous scan.

Change-Id: Ia3d46dbd2e67644e84436b90f40c203bc939eda7
CRs-Fixed: 2807010

components/cmn_services/policy_mgr/src/wlan_policy_mgr_get_set_utils.c

@@ -2265,7 +2265,7 @@ static bool policy_mgr_is_concurrency_allowed_4_port(
 			policy_mgr_err("couldn't start 4th port for bad force scc cfg");
 			return false;
 		}
-		if (pm_ctx->cfg.dual_mac_feature ||
+		if (!policy_mgr_is_dbs_enable(psoc) ||
 		    !pm_ctx->cfg.sta_sap_scc_on_dfs_chnl  ||
 		    !pm_ctx->cfg.sta_sap_scc_on_lte_coex_chnl) {
 			policy_mgr_err(