add USB logging

[elkoled]

Adds basic USB logging.

TODO:

• add kernel error counters (PORTLI link error count, SS reset count)
• add usb3 config cloudlog (dwc3/PHY tuning)
• add LTSSM link-state tracking

[github-actions]

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[adeebshihadeh]

I think we'll want to both log generic, low-level USB state and parse out our specific peripherals.

Such that consumers of this don't need to know the chestnut VID/PID, loop through the low level state, etc:

hardwareState {
  ....

  chestnutPresent: bool;

  // low level state straight from the kernel
  usbState {

  }
}

[adeebshihadeh]

i think this just goes in hardwared

[elkoled]

I thought about 100Hz+ usb state sampling inside usbd to catch transients but could do that in the kernel with interrupts and sample only the resulting counters in hardwared with 2Hz