Patch merged into coreboot/master: c875e2a vboot module: fix compilation issues

the following patch was just integrated into master:
commit c875e2aaabb1226b0ecbf98df6112ef8ce28dd41
Author: Aaron Durbin 
Date:   Fri Mar 22 19:48:39 2013 -0500

vboot module: fix compilation issues

There were 3 things stopping the vboot module from being
    compiled:

1. The vboot_reference code removed in the firmware/arch/$(ARCH)/include
       directory. This caused romcc to fail because romcc fails if -I<dir>
       points to non-existent directory.
    2. The rmodule API does not have the no-clearing-of-bss variant of the
       load function.
    3. cbfs API changes.

Change-Id: I1e1296c71c5831d56fc9acfaa578c84a948b4ced
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/2881
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

Build-Tested: build bot (Jenkins) at Sat Mar 23 03:08:00 2013, giving +1
Reviewed-By: Stefan Reinauer  at Sat Mar 23 19:34:57 2013, giving +2
See http://review.coreboot.org/2881 for details.

-gerrit