Patch merged into coreboot/master: e00ba21 libpayload: usb: Unify USB speed between XHCI stack and USB core

the following patch was just integrated into master:
commit e00ba2168bf9e61535b83ab4320364fa8e26910c
Author: Julius Werner 
Date:   Tue Sep 24 20:03:54 2013 -0700

libpayload: usb: Unify USB speed between XHCI stack and USB core

This patch removes the confusing concept of a special "xhci_speed" with
    a different numeric value from the usual speed used throughout the USB
    core (except for the places directly interacting with the xHC, which are
    explicitly marked). It also moves the MPS0 decoding function into the
    core and moves some definitions around in preparation of later changes
    that will make the stack SuperSpeed-ready. It makes both set_address
    implementations share a constant for the specification-defined
    SetAddress() recovery delay and removes pointless additional delays from
    the non-XHCI version.

Change-Id: I422379d05d4a502b12dae183504e5231add5466a
    Signed-off-by: Julius Werner 
    Reviewed-on: https://chromium-review.googlesource.com/170664
    Reviewed-by: Stefan Reinauer 
    Commit-Queue: Ronald Minnich 
    (cherry picked from commit f160d4439c0d7cea1d2e6b97207935d61dcbb2f2)
    Signed-off-by: Isaac Christensen 
    Reviewed-on: http://review.coreboot.org/6776
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/6776 for details.

-gerrit