[coreboot] SeaBIOS and CBFS floppy images

[Kevin O'Connor]

It is now possible to embed an image of a floppy into a CBFS flash
file and then boot from that image with SeaBIOS.

I've used this to boot FreeDOS directly from flash on my epia-cn.  An
lzma compressed bootable FreeDOS floppy uses about 95K (for the base
kernel and command interpreter).

More information is available on the Coreboot SeaBIOS page:

http://www.coreboot.org/SeaBIOS#Adding_a_floppy_image

Cheers,
-Kevin