The attached patch fixes the flags used on the receive URBs and greatly
increases throughput (especially on EHCI).  On EHCI before the patch,
receives came in around 460KB/s and after I am in the 10-11MB/s range
which is about the same speed I am able to achieve using my Intel nics.
Now transmit is actually the bottleneck on EHCI (only getting around 6MB/s).