Intrudoce a header common to all BookS MMUs, that can hold code that is
common to hash32 and book3s-v3 MMUs.
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Message-Id: <20210706150316.21005-2-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
