qcacld-3.0: Reject NAN enable if DFS CAC is in progress

When host handles hw_mode, host rejects NAN if CAC is in progress
as NAN always expect hw_mode DBS and set_hw_mode can't be done
while DFS CAC is going on.
But in hw_mode offloaded solutions, host doesn't have control
on set_hw_mode. Host can expect firmware to take care of
NAN+CAC scenario but that causes some out of sync issues.
So, reject NAN if DFS CAC is running. Framework/application
may retry later.

Change-Id: Icf4367c9185511e732379df2a32bf7889b9b101b
CRs-Fixed: 3614017

components/cmn_services/policy_mgr/src/wlan_policy_mgr_action.c

@@ -2157,6 +2157,11 @@ policy_mgr_nan_sap_pre_enable_conc_check(struct wlan_objmgr_psoc *psoc,
 			policy_mgr_debug("NAN+SAP unsafe ch SCC disabled");
 			return false;
 		}
+		if (pm_ctx->hdd_cbacks.hdd_is_cac_in_progress &&
+		    pm_ctx->hdd_cbacks.hdd_is_cac_in_progress()) {
+			policy_mgr_debug("DFS CAC in progress, reject NAN enable");
+			return false;
+		}
 	} else if (policy_mgr_is_sap_mode(mode)) {
 		nan_2g_freq =
 			policy_mgr_mode_specific_get_channel(pm_ctx->psoc,