Merge from NetBSD:

Merge from NetBSD:

    uhci.c:	-r1.123 (and a tiny bit of -r1.92)
    uhcivar.h:	-r1.32

	date: 2000/08/13 16:18:09;  author: augustss;  state: Exp;
	Implement what in Intel-speech is known as "bandwidth
	reclamation".  It means that we continously poll USB devices
	that have a pending transfer instead of polling just once
	every ms.  This speeds up some transfers at the expense of
	using more PCI bandwidth.