[coreboot] newconfig to Kconfig for Dummies

[Myles Watson]

> > Does it boot with Kconfig?  If yes, you're done.
> >
> Thanks Myles, yes it does boot with Kconfig, so I guess I am done.

Great!  Thanks for testing it.  Maybe we need some way to mark a board as
boot tested so the Kconfig settings don't get changed without a boot test
from here.

Myles