ll_temac: Add support for phy_mii_ioctl

This patch enables the ioctl support for the driver. So userspace
programs like mii-tool can work.

Resend in merge window
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/xilinx/ll_temac_main.c

@@ -915,12 +915,26 @@ temac_poll_controller(struct net_device *ndev)
 }
 #endif
 
+static int temac_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
+{
+	struct temac_local *lp = netdev_priv(ndev);
+
+	if (!netif_running(ndev))
+		return -EINVAL;
+
+	if (!lp->phy_dev)
+		return -EINVAL;
+
+	return phy_mii_ioctl(lp->phy_dev, rq, cmd);
+}
+
 static const struct net_device_ops temac_netdev_ops = {
 	.ndo_open = temac_open,
 	.ndo_stop = temac_stop,
 	.ndo_start_xmit = temac_start_xmit,
 	.ndo_set_mac_address = netdev_set_mac_address,
 	.ndo_validate_addr = eth_validate_addr,
+	.ndo_do_ioctl = temac_ioctl,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller = temac_poll_controller,
 #endif