phy: export phy_mii_ioctl

Export phy_mii_ioctl, so network drivers can use it when built
as modules too.
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/phy/phy.c

@@ -409,6 +409,7 @@ int phy_mii_ioctl(struct phy_device *phydev,
 
 	return 0;
 }
+EXPORT_SYMBOL(phy_mii_ioctl);
 
 /**
  * phy_start_aneg - start auto-negotiation for this PHY device