powerpc/mm: Fix compile when CONFIG_PPC_RADIX_MMU is not defined

This adds some stubs for hash only configs.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2019-01-14 11:38:49 +11:00 • committed by Michael Ellerman
commit cd6b8a631c