[BRLTTY] The Baum driver should *NOT* claim a TSI display!

[Mario Lang]

Hi.

I remember we've discussed this several months ago already,
but now that I am trying brltty 3.8 on one maschine of mine
that uses a TSI PowerBraille 80, I have seen this bug again.

When I disconnect my TSI and reconnect it later on, it can happen
that the Baum driver claims the display in PowerBraille compatibility mode.
But this "compatibility" mode is not compatible!  So key bindings change,
and over all, the user (me!) is confused and has to restart
brltty manually.

Does the Baum driver really have to claim a 80 cell PowerBraille?
AFAIR, the compatibility mode is for the Vario 40 models,
that display only has 40 cells by default.  Can we perhaps
make the baum driver ignore 80 cell TSI displays at least?

I have set my braille-driver to auto, but I'd like to keep this
setting for several other reasons.
-- 
CYa,
  Mario