[coreboot] libpayload: Geode video console support

[Jordan Crouse]

> All in all the patch looks quite nice. Please repost, but splitted in
> multiple patches. I'd say one which only moves files around and one
> which only adds files (while keeping libpayload in a compiling state).
> The final patch should do all other random modifications.

I split them into three patches - one adding the video console, the
other adding the support functions, and the third adding the Geode 
driver.  They are sent in reply to this email.

Jordan