[coreboot] Serial Console option (was Coreboot fails to initialize on ASUS A8V-E SE)

[Myles Watson]

> yes I can confirm that the Kconfig build method work for me too. As
> Rudolf said I had to disable VGA ROM as well otherwise it will came up
> with a exception error. It's necessary to have "Serial port console
> output" set to yes or it won't compile.

I'm not sure it makes sense for Coreboot to have that option.  It only takes
a few #if defined() statements to make it compile, but I'd rather see the
option disappear.  Users that want more speed can choose a different console
verbosity.

Comments?

Thanks,
Myles