qcacld-3.0: Fix fallthrough compiling issue

Fix compiling issues related to fallthrough in some platform.

Change-Id: Id11230910aae1c58d59d6e7cabb7be6ea237497e
CRs-Fixed: 3296178

components/cmn_services/policy_mgr/src/wlan_policy_mgr_core.c

@@ -1698,7 +1698,7 @@ void policy_mgr_dump_current_concurrency(struct wlan_objmgr_psoc *psoc)
 			policy_mgr_debug("%s", cc_mode);
 			break;
 		}
-		/* fallthrough */
+	fallthrough;
 	default:
 		policy_mgr_debug("unexpected num_connections value %d",
 				 num_connections);

core/hdd/src/wlan_hdd_main.c

@@ -4958,6 +4958,7 @@ bool hdd_is_dynamic_set_mac_addr_allowed(struct hdd_adapter *adapter)
 			hdd_info_rl("VDEV is not in disconnected state, set mac address isn't supported");
 			return false;
 		}
+	fallthrough;
 	case QDF_P2P_DEVICE_MODE:
 		return true;
 	case QDF_SAP_MODE: