macb: Fix speed setting

Fix NCFGR.SPD setting on 10Mbps.  This bug was introduced by
conversion to generic PHY layer in kernel 2.6.23.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/macb.c

@@ -148,7 +148,7 @@ static void macb_handle_link_change(struct net_device *dev)
 
 			if (phydev->duplex)
 				reg |= MACB_BIT(FD);
-			if (phydev->speed)
+			if (phydev->speed == SPEED_100)
 				reg |= MACB_BIT(SPD);
 
 			macb_writel(bp, NCFGR, reg);