[PATCH v2][POWERPC] document ipic level/sense info

[Segher Boessenkool]

>>> ... but it is probably worthwhile commentting that sense types 1 & 4
>>> are not supported; just to fill in the obvious gaps.  :-)
>>
>> Same for sense types 0, 3, 5, 6, ...
>>
>> Just name the sense types 0 and 1, similar to what all other
>> OF interrupt controller bindings do.
>
> I'm not really keen on changing the values at this point.  I think  
> we are stuck with them.

Yeah, unless you create a new binding for the same hardware.
Not that I recommend that of course.  I suppose the lesson
is to document a device binding as soon as possible, not
months after the corresponding code and trees are out (or to
mark all such code/trees clearly as "preliminary").


Segher