I didn't see a specific request for the device on
http://openbsd.org/want.html, but would like to send it to the
appropriate developer to see if device support for this chipset can be
added to OpenBSD.
Not even the Atheros sponsored binary blob based drivers support the
USB based chipsets as they are fundamentally different, (ie require
firmware). I doubt anyone would want to touch this with a 10 foot pole
unless Atheros were to release documentation on it, which I can't
imagine happening any time soon if at all.
Time is better spent attempting to get documented things working.