vDPA: fix spars cast warning in vdpa_dev_net_mq_config_fill

This commit fixes spars warnings: cast to restricted __le16
in function vdpa_dev_net_mq_config_fill()
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220929014555.112323-6-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/vdpa/vdpa.c

@@ -813,7 +813,8 @@ static int vdpa_dev_net_mq_config_fill(struct sk_buff *msg, u64 features,
 	    (features & BIT_ULL(VIRTIO_NET_F_RSS)) == 0)
 		return 0;
 
-	val_u16 = le16_to_cpu(config->max_virtqueue_pairs);
+	val_u16 = __virtio16_to_cpu(true, config->max_virtqueue_pairs);
+
 	return nla_put_u16(msg, VDPA_ATTR_DEV_NET_CFG_MAX_VQP, val_u16);
 }