Add the new time stamps *finalize chips* to track, when the method `dev_finalize_chips()` is called, so that the real time of `write_tables()` is known. Change-Id: I65ca0ec4c07c2eaa14982989cb206d23d8a2293f Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: https://review.coreboot.org/17725 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)