[LinuxBIOS] Adding a config option

[Christian Sühs]

> 
> That was actually what I was thinking about first but then we would
> need to create a new mainboard directory right?  Seemed a lot of
> duplication just to skip over a couple of lines of code or Can the
> target build file override the device stuff in the MB config?

There is also an enable setting for the MII in the config.lb under 
src/motherboard/via/epia-m for the ricoh chip

I'm not sure, what happens on this, but most epia-m revisions like the 
ME and others don't have a cf card slot.

chris