Patch merged into coreboot/master: gru: Increase SPI speed to 33MHz

the following patch was just integrated into master:
commit 584dbf2e3a1ac0638ad02c954c2d220278adfbf1
Author: Simon Glass 
Date:   Sun Sep 4 18:56:46 2016 -0600

gru: Increase SPI speed to 33MHz

Increase the SPI bus speed to speed up boot time. The maximum supported
    speed at 1.8V is 37.5MHz, and 33MHz is the next lowest convenient speed,
    given the clock parents.

BUG=chrome-os-partner:56556
    BRANCH=none
    TEST=boot on gru and see that things still work correctly. Total time
    spent on reading from SPI reduces from 185ms to 141ms.

Change-Id: I71436c9e343b18360fa63d528dea5cfcfbc831e6
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: d7576f6e53e407af61160be142c3d589e864a8cf
    Original-Change-Id: I55a19f523817862e081d23469e94fd795456dd67
    Original-Signed-off-by: Simon Glass 
    Original-Reviewed-on: https://chromium-review.googlesource.com/381313
    Original-Commit-Ready: Julius Werner 
    Original-Tested-by: Simon Glass 
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: https://review.coreboot.org/16708
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/16708 for details.

-gerrit