Device reset

[Nick Hibma]

HPS,

In FBSD7 I committed  an ioctl on the ugen.c (some time ago) that allowed 
for resetting the device. Not a port on the device, but the device itself. 
This was a function that was unimplemented in libusb1 up to then. For 
example some Atmel devices need a reset after you uploaded the firmware.

I cannot seem to find this functionality in usb_ioctl.h in teh FBSD8 USB 
stack.

Another use for this feature is to be able to reset a device into a known 
state, like the 3G dongles that freeze. Power-cycling them is the short way 
out of the situation.

Cheers,

Nick