macb: Use generic PHY layer

Convert the macb driver to use the generic PHY layer in
drivers/net/phy.

Signed-off-by: Frederic RODO <f.rodo@til-technologies.fr>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/macb.h b/drivers/net/macb.h
index b3bb218..4e3283e 100644
--- a/drivers/net/macb.h
+++ b/drivers/net/macb.h
@@ -383,11 +383,11 @@
 
 	unsigned int		rx_pending, tx_pending;
 
-	struct delayed_work	periodic_task;
-
-	struct mutex		mdio_mutex;
-	struct completion	mdio_complete;
-	struct mii_if_info	mii;
+	struct mii_bus		mii_bus;
+	struct phy_device	*phy_dev;
+	unsigned int 		link;
+	unsigned int 		speed;
+	unsigned int 		duplex;
 };
 
 #endif /* _MACB_H */