qcacld-3.0: Take reference of PCIe before sending command over qmi

For dump_station command, host driver does not take the PCIe
reference before it sends the command over qmi, which may result
in unexpected behaviour at FW if runtime suspend happens in the
processing of this command as runtime suspend will put PCIe also
in suspend.

In current scenario there is a race condition where host receives
dump_stats command when runtime suspend is in progress and it sends
this command to FW over qmi without taking PCIe reference.
Since host does not take the PCIe reference in this case, PCIe also
goes into suspend state which results in unexpected behavior in FW.

Change-Id: I54689d2c00f6a58fec0040953e4ba1ac734805c6
CRs-Fixed: 3651489

core/hdd/src/wlan_hdd_stats.c

@@ -8215,8 +8215,17 @@ int wlan_hdd_cfg80211_dump_station(struct wiphy *wiphy,
 	if (errno)
 		return errno;
 
+	errno = wlan_hdd_qmi_get_sync_resume();
+	if (errno) {
+		hdd_err("qmi sync resume failed: %d", errno);
+		goto end;
+	}
+
 	errno = __wlan_hdd_cfg80211_dump_station(wiphy, dev, idx, mac, sinfo);
 
+	wlan_hdd_qmi_put_suspend();
+
+end:
 	osif_vdev_sync_op_stop(vdev_sync);
 
 	return errno;