[LinuxBIOS] Building a viable rom *without* the fallback image

[San Mehat]

Hey all,

I'm trying to figure out how to do a build a rom which contains *only* the
normal image and not the fallback. For my purposes I don't believe I need a
fallback image since I'm burning my images to a ROM emulator. The rom in
question is only 512k and I need to fit 'other stuff' in there as well.

Appreciate it :)
-San