Request on AGESA testing

[Kyösti Mälkki]

Hello folks

I am about to flip AGESA boards to have MMCONF_SUPPORT_DEFAULT=y.

If you don't know what that means, just ignore it. Nevertheless, now would
be a good time to do a fresh build of your board and have it recorded in
our supported
boards database.

Also, I would be interested in runs with COLLECT_TIMESTAMPS=y and
CONSOLE_SERIAL=n to see how/if my follow-up changes will affect the
boottime performance.

Thanks,
Kyösti