[PATCH] gianfar mii needs to zero out the mii_bus structure

To ensure that phy_mask and any future elements of the mii_bus
structure are initialized use kzalloc() instead of kmalloc().

This fixes an issue in which phy_mask was not being initialized
and we would skip random phy addresses when scanning.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

drivers/net/gianfar_mii.c

@@ -133,7 +133,7 @@ int gfar_mdio_probe(struct device *dev)
 	if (NULL == dev)
 		return -EINVAL;
 
-	new_bus = kmalloc(sizeof(struct mii_bus), GFP_KERNEL);
+	new_bus = kzalloc(sizeof(struct mii_bus), GFP_KERNEL);
 
 	if (NULL == new_bus)
 		return -ENOMEM;