qcacld-3.0: Include VHT TX POWER ENVELOPE IE in SAP mode

qcacld-2.0 to qcacld-3.0 propagation

IEEE P802.11-REVmc require VHT TX POWER ENVELOPE IE in the beacons.
Extract VHT TX POWER ENVELOPE IE from hostapd beacon template
passed through start/change cfg80211 API and include it in driver
beacon template.

Change-Id: I8ef00ebbd44e71219d47f5a8cec6496e78cb7c66
CRs-Fixed: 984779

core/hdd/src/wlan_hdd_hostapd.c

@@ -7161,6 +7161,9 @@ int wlan_hdd_cfg80211_update_apies(hdd_adapter_t *adapter)
 	if (genie == NULL)
 		return -ENOMEM;
 
+	wlan_hdd_add_extra_ie(adapter, genie, &total_ielen,
+			      WLAN_EID_VHT_TX_POWER_ENVELOPE);
+
 	if (0 != wlan_hdd_add_ie(adapter, genie,
 		&total_ielen, WPS_OUI_TYPE, WPS_OUI_TYPE_SIZE)) {
 		hdd_err("Adding WPS IE failed");