Patch merged into coreboot/master: 462841c libpayload: Add support for interrupt transfers in OHCI

the following patch was just integrated into master:
commit 462841cea7b618c36b8eb532df6cb090e7f13741
Author: Nico Huber 
Date:   Wed Jun 20 14:58:21 2012 +0200

libpayload: Add support for interrupt transfers in OHCI

This adds support for usb interrupt transfers to the OHCI driver.
    Basically this enables support for HID keyboard devices.

For each interrupt transfer endpoint, two queues of transfer
    descriptors (TDs) are maintained: the first with initialized TDs
    is linked to the periodic schedule of the host controller (HC), the
    second holds processed TDs which will be polled by the usb class
    driver. The HC moves processed TDs from its schedule to a done queue.
    We periodically fetch all TDs from the done queue, to put them on the
    queue associated with the endpoint, where they can be polled from.
    Fully processed TDs (i.e. which have gone throuch all of this) will be
    reinitialized and put on the first queue again.

Change-Id: Iaab72c04087b36c9f0f6e539e31b47060c190015
    Signed-off-by: Nico Huber

Build-Tested: build bot (Jenkins) at Wed Jun 20 22:53:57 2012, giving +1
Reviewed-By: Stefan Reinauer  at Wed Jun 20 20:57:34 2012, giving +2
See http://review.coreboot.org/1128 for details.

-gerrit