Onboard Ethernet should now work

[Gavan Fantom <gavan%coolfactor.org@localhost>]

I've just committed code which pulls the MAC address for the onboard 
Ethernet device from the flash device, and passes it through to the wm 
driver.

This means that now, the onboard ethernet device has the correct MAC 
address, and thus works.

--
Gillette - the best a man can forget