This adds some minor improvements to the UHCI root hub code.  The only
important change is that it handles the overcurrent indicator bits on VIA
controllers properly; they are reported using the opposite sense from
Intel controllers.



	Report the OverCurrent status bits in the /proc debugging file
	and spontaneously change the use of whitespace.

	Remove unused variable in uhci_hub_status_data().

	Report OverCurrent status for VIA controllers properly (the
	meaning of the status bit is inverted with respect to Intel
	controllers).

	Save the port status I/O address in a variable rather than
	recalculating it many times.

	Merge code for handling SetHubFeature and ClearHubFeature since
	we don't implement either one.

	Remove some unnecessary comments.

	Remove redundant min_t calculation.