qcacld-3.0: Send driver disconnect internal reason code to user space

Send the driver disconnect internal reason code as an event to user space
using QCA_NL80211_VENDOR_SUBCMD_DRIVER_DISCONNECT_REASON vendor command.

Change-Id: I19959e097c5709d63fbd941583b934e291c3af1c
CRs-Fixed: 3371396

core/hdd/src/wlan_hdd_cfg80211.c

@@ -1888,6 +1888,7 @@ static const struct nl80211_vendor_cmd_info wlan_hdd_cfg80211_vendor_events[] =
 		.subcmd = QCA_NL80211_VENDOR_SUBCMD_UPDATE_STA_INFO,
 	},
 	FEATURE_THERMAL_VENDOR_EVENTS
+	FEATURE_DRIVER_DISCONNECT_REASON
 #ifdef WLAN_SUPPORT_TWT
 	FEATURE_TWT_VENDOR_EVENTS
 #endif