[coreboot] [PATCH]clean up bootblocksize handling in cbfstool, kconfig

[Myles Watson]

> Reverting everthing would be overkill.. The only thing that negatively
> affects the build is the ROMBASE configuration in src/arch/i386/Kconfig, the
> other parts are fine.
>
> I'm looking for a way to keep ROMBASE functional that way (esp. to allow
> smaller bootblocks) while fixing the current issue.
I think we should allow larger boot blocks at the same time and fix
fam10 builds.

> Maybe it's still a good
> idea to revert that change for now.
It's up to you.  Reverting it seems cheap compared to having it broken
for multiple days.

Thanks,
Myles