net: systemport: Omit superfluous error message in bcm_sysport_probe()

In the function bcm_sysport_probe(), when get irq failed, the function
platform_get_irq() logs an error message, so remove redundant message
here.
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bcmsysport.c

@@ -2475,7 +2475,6 @@ static int bcm_sysport_probe(struct platform_device *pdev)
 		priv->wol_irq = platform_get_irq(pdev, 1);
 	}
 	if (priv->irq0 <= 0 || (priv->irq1 <= 0 && !priv->is_lite)) {
-		dev_err(&pdev->dev, "invalid interrupts\n");
 		ret = -EINVAL;
 		goto err_free_netdev;
 	}