Patch merged into coreboot/master: rockchip/rk3399: sdram: also prepare the index1 configuration

the following patch was just integrated into master:
commit 883f5cbdcea6e8e4dbca57ff0a430338c9159ed2
Author: Lin Huang 
Date:   Thu Sep 15 22:59:55 2016 +0800

rockchip/rk3399: sdram: also prepare the index1 configuration

To enable DDR Dynamic Voltage and Frequency Scaling (DVFS) we need to
    train alternative configurations first, so do the training and store the
    values.

BUG=None
    BRANCH=None
    TEST=Boot from kevin

Change-Id: I944a4b297a4ed6966893aa09553da88171307a42
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 94533ff3ba21bcb0ace00bedcf0cebb89a341be2
    Original-Change-Id: I4a98bc0db5553d154fedb657e35b926a92aa80c7
    Original-Signed-off-by: Lin Huang 
    Original-Reviewed-on: https://chromium-review.googlesource.com/386596
    Original-Commit-Ready: Douglas Anderson 
    Original-Reviewed-by: Derek Basehore 
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: https://review.coreboot.org/17104
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See https://review.coreboot.org/17104 for details.

-gerrit