Adding cache shape info to powerpc

[Benjamin Herrenschmidt]

On Wed, 2016-08-17 at 10:36 +0200, Florian Weimer wrote:
> > I've chosen this format. Is that ok with the community ? Can I still use
> > the same AT_* vector numbers or should I create new ones ?
> 
> If the old format was in mainline at any point (or in a vendor kernel, 
> but let's hope vendors don't do this anymore), you need to pick new numbers.
> 
> Do you expect that IFUNC resolvers will need this information?

The old format was only used by other architectures, not powerpc, do I
still need to pick different numbers in that case ?

As for IFUNC I don't think so but I'll let Steve reply as I believe he
is the original requestor for the functionality.

Cheers,
Ben.