Patch merged into coreboot/master: arch/x86: cache postcar in stage cache

the following patch was just integrated into master:
commit d008413a3c46d4346f3cc398bbfd60b875ff3084
Author: Aaron Durbin 
Date:   Tue Nov 29 15:52:08 2016 -0600

arch/x86: cache postcar in stage cache

Stash and reload postcar stage in the stage cache for increased
    S3 resume speed. It's impact is small (2 ms or so), but there's
    no need to go to the boot media on resume to reload something
    that was already loaded. This aligns with the same paths we take
    on ramstage as well.

Change-Id: I4313794826120853163c7366e81346858747ed0a
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/17649
    Tested-by: build bot (Jenkins)
    Reviewed-by: Furquan Shaikh

See https://review.coreboot.org/17649 for details.

-gerrit