[usb] Add "usbscan" command for iterating over USB devices

Implement a "usbscan" command as a direct analogy of the existing
"pciscan" command, allowing scripts to iterate over all detected USB
devices.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
6 files changed
tree: 52d62d6941b071396ecc2d65de9c5cb5199d395f
  1. .github/
  2. contrib/
  3. src/
  4. COPYING
  5. COPYING.GPLv2
  6. COPYING.UBDL
  7. README