[V2] powerpc/mm/radix: Update Radix tree size as per ISA 3.0

[Michael Ellerman]

On Fri, 2016-17-06 at 06:10:36 UTC, "Aneesh Kumar K.V" wrote:
> ISA 3.0 updated it to be encoded as Radix tree size = 2^(RTS + 31). We
> have it encoded as 2^(RTS + 28). Add a helper with the correct encoding
> and use it instead of opencoding.
> 
> Fixes commit 2bfd65e45e87 ("powerpc/mm/radix: Add radix callbacks for
> early init routine ")
> 
> Reviewed-by: Balbir Singh <bsingharora at gmail.com>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/b23d9c5b9c83c05e013aa52460

cheers