rtl8192du: Fix WARNING

Since converting to CFG80211, warnings of the following type have been issued:

[88526.660804] WARNING: CPU: 3 PID: 9705 at net/wireless/sme.c:848 __cfg80211_disconnected+0x3b8/0x3e0 [cfg80211]()

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>

os_dep/ioctl_cfg80211.c

@@ -4562,7 +4562,7 @@ int rtw_wdev_alloc(struct rtw_adapter *padapter, struct device *dev)
 	}
 	wdev->wiphy = wiphy;
 	wdev->netdev = pnetdev;
-	wdev->iftype = NL80211_IFTYPE_MONITOR; /*  for rtw_setopmode_cmd() in cfg80211_rtw_change_iface() */
+	wdev->iftype = NL80211_IFTYPE_STATION;
 	padapter->rtw_wdev = wdev;
 	pnetdev->ieee80211_ptr = wdev;