[BRLTTY] -B parameters on boot cmdline

[Samuel Thibault]

Hello,

I don't remember whether this was discussed already.

Some drivers need a -B parameter to specify the actual protocol to be
used (e.g. B protocol=clio). There doesn't seem to be a way to specify
this from the boot cmdline.  I'm not sure how we'd like do this while
keeping backward compatibility, i.e. something like:

brltty=ttyUSB0,eu,fr

brltty=ttyUSB0,eu,fr,protocol=clio

but there is of course a conflict between the parameters separator of -B
and the parameter separator of the boot cmdline...

Thoughts?

Samuel