qcacld-3.0: Remove wext handler on mon mode adapter deinit

Wext handlers are not getting deregistered during the
interface down of monitor mode. So. After the idle shutdown
also the user can issue ioctls which can lead to system instability.

Fix is to remove the wext handler as part of adapter deinit.

change-ID: I49ab4b0cfa0125b253bc097f180226f2095d5df1
CRs-Fixed: 2615138

core/hdd/src/wlan_hdd_main.c

@@ -4982,6 +4982,7 @@ void hdd_deinit_adapter(struct hdd_context *hdd_ctx,
 	switch (adapter->device_mode) {
 	case QDF_STA_MODE:
 	case QDF_P2P_CLIENT_MODE:
+	case QDF_MONITOR_MODE:
 	case QDF_P2P_DEVICE_MODE:
 	case QDF_IBSS_MODE:
 	case QDF_NDI_MODE: