DaVinci EMAC: correct param for ISR

emac_irq is declared as:

static irqreturn_t emac_irq(int irq, void *dev_id)
{
       struct net_device *ndev = (struct net_device *)dev_id;
       struct emac_priv *priv = netdev_priv(ndev);
    ... 

	Clearly emac_irq() needs "struct net_device *" as "void *dev_id", so correct this.

Signed-off-by: Tonyliu <Bo.Liu@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index f72c56d..3179521 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -2221,7 +2221,7 @@
 	struct emac_priv *priv = netdev_priv(ndev);
 
 	emac_int_disable(priv);
-	emac_irq(ndev->irq, priv);
+	emac_irq(ndev->irq, ndev);
 	emac_int_enable(priv);
 }
 #endif