Adding support for MosChip 9912 PCIe (serial/parallel) cards

[miltonott]

>I am now using this diff to access the MCS9912. I am (mis)using
>puc to initialise whatever is needed for the printer port to work
>and let ppc attach to puc. As puc does not attach to single port
>devices, I have removed this check. uart works by simply adding
>the device. This is all quite ugly but it works...

My lord, may I please see the device.hints file you are now using,
or are you still having to disable some entries.

I hope this email finds you in good spirit and health.