Add a timestamp before and after waiting for the ME to acknowledge the DRAM being ready. This allows easier debugging during use of me_cleaner and/or alternate ME images. Change-Id: Ie228e12a75d373b4f406b3595e1fb1aab41aa5df Signed-off-by: Nathaniel Roach <nroach44@gmail.com> Reviewed-on: https://review.coreboot.org/21465 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>