ethernet: fix min/max MTU typos

Fixes: d894be57('ethernet: use net core MTU range checking in more drivers')
CC: Jarod Wilson <jarod@redhat.com>
CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: NStefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/sb1250-mac.c

@@ -2219,7 +2219,7 @@ static int sbmac_init(struct platform_device *pldev, long long base)
 
 	dev->netdev_ops = &sbmac_netdev_ops;
 	dev->watchdog_timeo = TX_TIMEOUT;
-	dev->max_mtu = 0;
+	dev->min_mtu = 0;
 	dev->max_mtu = ENET_PACKET_SIZE;
 
 	netif_napi_add(dev, &sc->napi, sbmac_poll, 16);

drivers/net/ethernet/ibm/ibmveth.c

@@ -1549,7 +1549,7 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
 	}
 
 	netdev->min_mtu = IBMVETH_MIN_MTU;
-	netdev->min_mtu = ETH_MAX_MTU;
+	netdev->max_mtu = ETH_MAX_MTU;
 
 	memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN);