[Assist] qemu hotplug usb

[bill-auger]

you have been asking many questions about qemu - most such
questions are not specific to parabola but would be best answered by
the qemu folks - qemu has mailing lists and an IRC channel too - are
you asking them these questions also? - is their tech support
in-adequate?

regarding this particular question, the answer is probably in the docs -
you can do many magical things in the qemu command shell - none of
which i remember off-hand - the qemu website has thorough docs with a
section for those commands