This patch cleans up the option rom code in coreboot significantly by dropping all extra copies of vgabios.c and instead changing the code to use oprom/x86.c with custom per-board int15 handlers.

Corey, I can't test this on cn400/cn700 ... Can you? The code should go in as is, but it might require some extra fixing, as (like with vgabios.c before) the int15 handlers are all copies of the age-old epia-m code. (except vx800)

Stefan