lanana: Add major/minor entries for PPC QE UART devices

[Segher Boessenkool]

> Just allocate the four slots and we'll deal with
> anything above this in custom products.

Another option is to use 46..49 for UARTs #0..3,
and 192..195 for UARTs #4..7.

Or, perhaps better, use 46..49 for #0..3, and
192..199 for #0..7, handling the duplication in
the driver; and deprecate the old range.


Segher