[coreboot] coreboot_apc woes

[Myles Watson]

> So there are at most three boards that require this feature (which seems
> to be about distributing ram training across the CPUs). I'm not sure how
> much time is saved by that (it doesn't do RAM clearing for ECC in the
> AP-local code, as far as I can see!), and it would be a rather large
> special mode in the build system for three boards (though that could
> probably be expanded to 'all K8 boards')
Having it be an option is nice.  I wouldn't expand it to all K8/fam10 until
it's been tested on a few more boxes.

> Where to go from here, shall we fix it, or drop it?
Besides complicating the build system, how much work is it to fix?  My vote
would be to fix it, since it worked in newconfig.

Thanks,
Myles