[coreboot] v3: please don't touch stage0.S files

[Carl-Daniel Hailfinger]

Hi,

I'm currently trying to consolidate as much v3 stage0 code as possible
into one preferred form with the best comments and coding style. That
will allow us to split out common parts and focus on the
processor-specific code.
However, I'm not yet done, so please don't perform cleanups/patches on
these files right now. That saves me a lot of work.
Thanks!

Regards,
Carl-Daniel