nl80211: Fix nl80211_get_wiphy_index() for P2P Device

For P2P Device the netlink message should have wdev identifier
instead of the interface index. This fixes a failure which occurred
executing the P2P_GROUP_ADD command.

Signed-hostap: Arend van Spriel <arend@broadcom.com>

src/drivers/driver_nl80211.c

@@ -712,7 +712,8 @@ static int nl80211_get_wiphy_index(struct i802_bss *bss)
 
 	nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 
-	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
+	if (nl80211_set_iface_id(msg, bss) < 0)
+		goto nla_put_failure;
 
 	if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 		return data.wiphy_idx;