usb4bsd: Port aue(4), cue(4), ipheth(4) and kue(4) USB ethernet drivers.

Also sync them with FreeBSD's current code.

aue(4), cue(4) and kue(4) were available with oldusb. ipheth(4) is a
new driver.

This commit adds support for 105 devices.

Still missing from our net/ category are cdce(4), rue(4), uhso(4) and
usie(4).

Taken-from-and-thanks-to: FreeBSD