Remaining USB related fixes #3
Description
- need to remove VDP_USB_URB_ZERO_PACKET, need to simulate it somehow
- support audio endpoints, i.e. the ones with larger descriptor size
- device features (remote wakeup and selfpower)... are these properly supported ?
- power on/off signals - not tested, need to find a way to trigger them
- qualifier descriptor - don't use when in high speed mode
- something else...