A number of changes to qdev paths have been proposed in various threads.
It's becoming harder to keep track of them, so let me sum them up in one
place. Please correct me if I misrepresent your ideas.
I'm going to describe the current state of things, and the proposed
changes (marked with ###).
* Else, use TYPE.NUM, where TYPE is derived from the bus type, and NUM
is the bus number, as above.
### Paul proposes to either drop TYPE.NUM (and require drivers to
provide bus names), or make NUM count separately for each bus type.
I revised this proposal: Drop the .NUM part, and
