USB ehci resume problems fixed in 5-stable

[Khairil Yusof]

Just to let others know that Ian Dowse has just MFC'ed latest USB
updates from current to the stable branch. Amongst the fixes is
resume/suspend for USB devices (ehci) which was not working.

I can confirm on my thinkpad x40 that my USB thumbdrive, dvd drive and
mouse are all working properly after an S3 suspend.

FreeBSD 5-stable mobile support is impressive!