net: macb: Remove redundant poll irq assignment

In phy_device's general probe, this device will already be set for
phy register polling, rendering this code redundant.

Signed-off-by: Brad Mouring <[e-mail]>
Suggested-by: Andrew Lunn <[e-mail]>
Reviewed-by: Florian Fainelli <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/cadence/macb_main.c

···
 {
 	struct macb_platform_data *pdata;
 	struct device_node *np;
-	int err, i;
+	int err;
 
 	/* Enable management port */
 	macb_writel(bp, NCR, MACB_BIT(MPE));
···
 	if (np) {
 		err = of_mdiobus_register(bp->mii_bus, np);
 	} else {
-		for (i = 0; i < PHY_MAX_ADDR; i++)
-			bp->mii_bus->irq[i] = PHY_POLL;
-
 		if (pdata)
 			bp->mii_bus->phy_mask = pdata->phy_mask;