powerpc/powernv: Fix powernv Kconfig dependencies

[Michael Ellerman]

On Mon, 2017-04-10 at 05:24:35 UTC, Alistair Popple wrote:
> The patch to introduce address translation services for Nvlink2 uses
> MMU notifiers. However usage of MMU notifiers requires a Kconfig
> option which is not selected by default on powerpc so add it to the
> powernv Kconfig.
> 
> Signed-off-by: Alistair Popple <alistair at popple.id.au>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/abfe8026b505d66dad7a3e5ebe7235

cheers