[PATCH] mv643xx_eth: Select CONFIG_MII on CONFIG_MV643XX_ETH

>From : Dale Farnsworth <dale@farnsworth.org>

Recent patches for the mv643xx_eth driver now use the MII interface
library.  Select MII so it gets built when that driver is selected.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>