AGESA: Trace execution with AGESA_EVENTLOG()

Change-Id: I5601ed92ca808603b0a9edad118ca54aa168aceb
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7604
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
39 files changed