Patch merged into coreboot/master: parade/ps8640: add delay to every loop when polling ps8640 ready

the following patch was just integrated into master:
commit 54aa89c7b4ea793f49f6cfe73e13b4ce71dd138f
Author: Jitao Shi <[e-mail]>
Date:   Wed Aug 17 10:21:37 2016 +0800

    parade/ps8640: add delay to every loop when polling ps8640 ready
    
    Add delay before and in polling ps8640 ready to reduce the frequency
    of polling.
    
    BUG=chrome-os-partner:54897
    BRANCH=none
    TEST=build pass elm and show ui
    
    Change-Id: I43c833af910490e53496a343330a6a6af35623a9
    Signed-off-by: Martin Roth <[e-mail]>
    Original-Commit-Id: bc8c3d6f7cf0b2da693a465cf3845e8bbc53825a
    Original-Change-Id: I5c725eed8110ff9f545c1142ca28bcff336b6860
    Original-Signed-off-by: Jitao Shi <[e-mail]>
    Original-Reviewed-on: https://chromium-review.googlesource.com/371718
    Original-Commit-Ready: Nicolas Boichat <[e-mail]>
    Original-Tested-by: jitao shi <[e-mail]>
    Original-Reviewed-by: Julius Werner <[e-mail]>
    Original-Reviewed-by: Daniel Kurtz <[e-mail]>
    Reviewed-on: https://review.coreboot.org/16364
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin <[e-mail]>


See https://review.coreboot.org/16364 for details.

-gerrit