Patch merged into coreboot/master: libpayload: udc: dwc2: support force_shutdown() routine

the following patch was just integrated into master:
commit d8a3ed49a59fdf54ac3f311a75dca3e94b13eb26
Author: Yunzhi Li 
Date:   Tue Jun 23 17:42:34 2015 +0800

libpayload: udc: dwc2: support force_shutdown() routine

Add force_shutdown() routine for dwc2 udc driver to support
    disconnect and reconnect case when fastboot receiving data.

BUG=chrome-os-partner:41687
    BRANCH=None
    TEST=None

Change-Id: I9ec204d8b7088cfafd3164c9779a6fd85d379dba
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 9238f87c065ba8a57bfb4a7e65fd1821ff2922f9
    Original-Change-Id: I1e584aaf19efa14409bdfa26039c27fa7034b5f0
    Original-Signed-off-by: Yunzhi Li 
    Original-Reviewed-on: https://chromium-review.googlesource.com/281130
    Original-Reviewed-by: Patrick Georgi 
    Original-Tested-by: Lin Huang 
    Original-Commit-Queue: Jeffy Chen 
    Reviewed-on: http://review.coreboot.org/10770
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/10770 for details.

-gerrit