nl80211: Use nl80211_set_iface_id() to get hw features data

Use nl80211_set_iface_id() in wpa_driver_nl80211_get_hw_feature_data(),
as otherwise the function fails for a P2P Device interface (which does
not have a netdev associated with it).

Signed-hostap: Ilan Peer <ilan.peer@intel.com>

src/drivers/driver_nl80211.c

@@ -6723,7 +6723,8 @@ wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
 		nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
 
 	NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
-	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+	if (nl80211_set_iface_id(msg, bss) < 0)
+		goto nla_put_failure;
 
 	if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
 		nl80211_set_regulatory_flags(drv, &result);