Patch merged into coreboot/master: libpayload: Avoid confusing usb debug output in dwc2 driver

the following patch was just integrated into master:
commit 102245fbed0b903e107880cb39a43bd8df757180
Author: Patrick Georgi 
Date:   Mon Oct 26 19:48:25 2015 +0100

libpayload: Avoid confusing usb debug output in dwc2 driver

enqueue_packet already runs start_ep_transfer, which enqueues the next
    job. It's pretty much guaranteed that the port will look busy.

BUG=none
    BRANCH=none
    TEST=no spurious ep 0-0 busy messages

Change-Id: I9cbfa7b51dd37564262295ddbcdd0755da40c05b
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 8997dbd78dc363334f4e22eaa61f25de1449ffba
    Original-Change-Id: I8a39713fc1d6f16b80284e0f21dc95685716a9b7
    Original-Signed-off-by: Patrick Georgi 
    Original-Reviewed-on: https://chromium-review.googlesource.com/308763
    Original-Commit-Ready: Patrick Georgi 
    Original-Tested-by: Patrick Georgi 
    Original-Reviewed-by: Furquan Shaikh 
    Original-Reviewed-by: yunzhi li 
    Reviewed-on: http://review.coreboot.org/12259
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/12259 for details.

-gerrit