Patch merged into coreboot/master: google/veyron: Fix building with CHROMEOS enabled

the following patch was just integrated into master:
commit f0a97bf75ecc55292be3fbfd8601ce0d0510820f
Author: Patrick Georgi 
Date:   Mon Jun 29 21:57:15 2015 +0200

google/veyron: Fix building with CHROMEOS enabled

romstage requires some button accessor functions for the Chrome OS boot flow.

Change-Id: I3f90d66b103e0610931c183dd5f5679ca6f910f6
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/10697
    Reviewed-by: Stefan Reinauer 
    Tested-by: build bot (Jenkins)

See http://review.coreboot.org/10697 for details.

-gerrit