[PATCH v3] Stop pmac_zilog from abusing 8250's device numbers; optionally.

[Paul Mackerras]

David Woodhouse writes:

> OK, how about a config option to preserve the old behaviour...

Well, that's a start but it doesn't provide a migration path.

Is it possible to have the pmac_zilog ports registered both with the
new number and with the old number (assuming it's not already taken)?
That way people can move over gradually.

Paul.