aq(4): Document the Atlantic 2 (AQC113/114/115/116) devices

List every AQC part aq_vendor_info_array[] probes, each with the
maximum speed aq_hw_capabilities() grants it.

Only the Atlantic 2 parts link at 10 Megabit. The AQC100 and AQC100S
are the only SFP+ controllers; the rest are twisted pair.

Reviewed by: adrian, ziaee
Signed-off-by: Nick Price <nick@spun.io>
Differential Revision: https://reviews.freebsd.org/D58144