From: Alastair D'Silva <alastair@xxxxxxxxxxx>
This patch enables the OpenCAPI Persistent Memory driver, as well
as DAX support, for the 'powernv' platform.
DAX is not a strict requirement for the functioning of the driver, but it
is likely that a user will want to create a DAX device on top of their
persistent memory device.
Signed-off-by: Alastair D'Silva <alastair@xxxxxxxxxxx>