ethernet: ehea: add missing cast

We need to cast the pointer, unlike memcpy() eth_hw_addr_set()
does not take void *. The driver already casts &port->mac_addr
to u8 * in other places.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: a96d317f ("ethernet: use eth_hw_addr_set()")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/ehea/ehea_main.c

@@ -2986,7 +2986,7 @@ static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 	SET_NETDEV_DEV(dev, port_dev);
 
 	/* initialize net_device structure */
-	eth_hw_addr_set(dev, &port->mac_addr);
+	eth_hw_addr_set(dev, (u8 *)&port->mac_addr);
 
 	dev->netdev_ops = &ehea_netdev_ops;
 	ehea_set_ethtool_ops(dev);