Patch on unsupported AT command

[Denis Kenzior]

Hi Marcel,

> Hi Denis,
>
> > > I think this might need a GAtChat quirk function where we can add extra
> > > terminator responses that will be recognized. And maybe even translated
> > > into something meaningful.
> >
> > Originally I had the terminators freely definable on the GAtChat + some
> > hardcoded ones, but abandoned that approach since it didn't seem useful.
> > Perhaps this needs to be resurrected.
> >
> > > Denis, or do you want this quirked in every plugin or modem driver?
> >
> > I do prefer non-standard terminators to be setup in the plugin/driver.
>
> I meant adding something like g_at_chat_add_terminator() or so.

Yes, that is what I meant as well.

Regards,
-Denis