Patch merged into coreboot/master: rockchip: gru: update the hynix lpddr3 config to run at 928MHz

the following patch was just integrated into master:
commit 0d9839b3334d7769e1d89ebc68e01d91e5672c74
Author: Shunqian Zheng 
Date:   Wed May 11 15:18:17 2016 +0800

rockchip: gru: update the hynix lpddr3 config to run at 928MHz

Update the DDR config and DRAM driver to allow running at up to
    928MHz. Kevin config/clock rate are not being changed, but Gru now
    runs at 928 MHz.

BRANCH=none
    BUG=chrome-os-partner:51537
    TEST=booted Kevin and Gru to Linux prompt. Ran stressapptest for 10 min on Gru,

Change-Id: I66c1a171d5c7d05b2878c7bc5eaa0d436c7a1be2
    Signed-off-by: Martin Roth 
    Original-Commit-Id: 8baf0d82816a7ea1c4428e15caeefa2795d001f9
    Original-Change-Id: I5e1d6d1025f10203da8f11afc3bbdf95f133c586
    Original-Signed-off-by: Shunqian Zheng 
    Original-Signed-off-by: Vadim Bendebury 
    Original-Reviewed-on: https://chromium-review.googlesource.com/343984
    Original-Reviewed-by: Stephen Barber 
    Reviewed-on: https://review.coreboot.org/15027
    Tested-by: build bot (Jenkins)
    Reviewed-by: Furquan Shaikh

See https://review.coreboot.org/15027 for details.

-gerrit