Patch merged into coreboot/master: arch/x86: Add common assembly code for stages that run in CAR

the following patch was just integrated into master:
commit 73f7069fe6915cce545d4a5839ab1760e1fed2a2
Author: Andrey Petrov 
Date:   Sun Feb 28 22:37:15 2016 -0800

arch/x86: Add common assembly code for stages that run in CAR

This adds a few assembly lines that are generic enough to be shared
    between romstage and verstage that are ran in CAR. The GDT reload
    is bypassed and the stack is reloaded with the CAR stack defined
    in car.ld. The entry point for all those stages is car_stage_entry().

Change-Id: Ie7ef6a02f62627f29a109126d08c68176075bd67
    Signed-off-by: Andrey Petrov 
    Signed-off-by: Aaron Durbin 
    Signed-off-by: Andrey Petrov 
    Reviewed-on: https://review.coreboot.org/13861
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See https://review.coreboot.org/13861 for details.

-gerrit