Patch merged into coreboot/master: vboot: provide RW region device support

the following patch was just integrated into master:
commit 5bb9e93ea68db0ffe156f2df2d69397f21c57095
Author: Aaron Durbin 
Date:   Fri Aug 12 12:46:07 2016 -0500

vboot: provide RW region device support

Explicitly provide a RW view of an vboot FMAP region. This is
    required for platforms which have separate implementations of
    a RO boot device and a RW boot device.

BUG=chrome-os-partner:56151

Change-Id: If8bf2e1c7ca9bff536fc5c578fe0cf92ccbd2ebc
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/16205
    Reviewed-by: Furquan Shaikh 
    Tested-by: build bot (Jenkins)

See https://review.coreboot.org/16205 for details.

-gerrit