Patch merged into coreboot/master: 320647a vboot2: add verstage

the following patch was just integrated into master:
commit 320647abdad1ea6cdceb834933507677020ea388
Author: Daisuke Nojiri 
Date:   Thu Jun 19 19:09:47 2014 -0700

vboot2: add verstage

Verstage will host vboot2 for firmware verification.
    It's a stage in the sense that it has its own set of toolchains, compiler flags,
    and includes. This allows us to easily add object files as needed. But
    it's directly linked to bootblock. This allows us to avoid code
    duplication for stage loading and jumping (e.g. cbfs driver) for the boards
    where bootblock has to run in a different architecture (e.g. Tegra124).
    To avoid name space conflict, verstage symbols are prefixed with verstage_.

TEST=Built with VBOOT2_VERIFY_FIRMWARE on/off. Booted Nyan Blaze.
    BUG=None
    BRANCH=none

Original-Signed-off-by: Daisuke Nojiri 
    Original-Change-Id: Iad57741157ec70426c676e46c5855e6797ac1dac
    Original-Reviewed-on: https://chromium-review.googlesource.com/204376
    Original-Reviewed-by: Randall Spangler

(cherry picked from commit 27940f891678dae975b68f2fc729ad7348192af3)
    Signed-off-by: Marc Jones

Change-Id: I42b2b3854a24ef6cda2316eb741ca379f41516e0
    Reviewed-on: http://review.coreboot.org/8159
    Reviewed-by: Stefan Reinauer 
    Tested-by: build bot (Jenkins)

See http://review.coreboot.org/8159 for details.

-gerrit