This patch implements the infrastructure and hypercalls necessary for
the PAPR specified Virtual SCSI interface.  This is the normal method
for providing (virtual) disks to PAPR partitions.
Signed-off-by: NBen Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NDavid Gibson <dwg@au1.ibm.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>