[PATCH v6 21/22] usb: dwc2: host: Totally redo the microframe scheduler

This totally reimplements the microframe scheduler in dwc2 to attempt to handle periodic splits properly. The old code didn't even try, so this was a significant effort since periodic splits are one of the most complicated things in USB. I've attempted to keep the old "don't use the microframe"

[PATCH v6 21/22] usb: dwc2: host: Totally redo the microframe scheduler

This totally reimplements the microframe scheduler in dwc2 to attempt to handle periodic splits properly. The old code didn't even try, so this was a significant effort since periodic splits are one of the most complicated things in USB. I've attempted to keep the old "don't use the microframe"