Patch merged into coreboot/master: 62ee959 Add DDR refresh config to pei data structure.

the following patch was just integrated into master:
commit 62ee9597c5c34e2e3f51e22b6a094d574dd2f3cb
Author: Shawn Nematbakhsh 
Date:   Wed May 8 11:41:04 2013 -0700

Add DDR refresh config to pei data structure.

Allow platform customized DDR config, including forcing refresh rate to
    2x.

Change-Id: I311ae7ddf25142153c94a3fc3fb0a36e03f50ab2
    Reviewed-on: https://gerrit.chromium.org/gerrit/50476
    Reviewed-by: Duncan Laurie 
    Tested-by: Shawn Nematbakhsh 
    Commit-Queue: Shawn Nematbakhsh

See http://review.coreboot.org/4213 for details.

-gerrit