virtio_pmem: convert to LE accessors

Virtio pmem is modern-only. Use LE accessors for config space.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/nvdimm/virtio_pmem.c

@@ -58,9 +58,9 @@ static int virtio_pmem_probe(struct virtio_device *vdev)
 		goto out_err;
 	}
 
-	virtio_cread(vpmem->vdev, struct virtio_pmem_config,
+	virtio_cread_le(vpmem->vdev, struct virtio_pmem_config,
 			start, &vpmem->start);
-	virtio_cread(vpmem->vdev, struct virtio_pmem_config,
+	virtio_cread_le(vpmem->vdev, struct virtio_pmem_config,
 			size, &vpmem->size);
 
 	res.start = vpmem->start;