[coreboot] [PATCH] flashrom: Add --list-supported-wiki, list known-good/-bad boards

[Uwe Hermann]

See patch.

The code may have some potential for simplification, but it basically
works. I already used the output of the new -z option in the
http://coreboot.org/Flashrom page, please check if there are errors in
the output (or code).

Thanks, Uwe.