powerpc/mm/radix: Document software bits for radix

Add #defines for Power ISA 3.0 software defined bits.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-04-29 23:26:33 +10:00 • committed by Michael Ellerman
commit 69dfbaeb65