If ROM caching is selected the haswell CPU initialization code will enable ROM caching after all other CPU threads are brought up. Change-Id: I75424bb75174bfeca001468c3272e6375e925122 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3016 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>