Catch up aha(4) manpage with hardware notes and driver code.
Catch up aha(4) manpage with hardware notes and driver code.

(While applying this patch from the PR, delete a stray comma.)

PR:		55527
Submitted by:	Lukas Ertl <l.ertl@univie.ac.at>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase