sparc64: add port_id to VIO device metadata

Add port_id field to VIO device metadata to identify the port of
VIO device.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/vio.h

@@ -330,6 +330,7 @@ struct vio_dev {
 
 	u64			dev_no;
 
+	unsigned long		port_id;
 	unsigned long		channel_id;
 
 	unsigned int		tx_irq;

arch/sparc/kernel/vio.c

@@ -334,6 +334,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
 		memset(vdev->compat, 0, sizeof(vdev->compat));
 	vdev->compat_len = clen;
 
+	vdev->port_id = ~0UL;
 	vdev->tx_irq = 0;
 	vdev->rx_irq = 0;
 
@@ -349,6 +350,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
 		dev_set_name(&vdev->dev, "%s-%llu-%llu", type,
 			     *cfg_handle, *id);
 		vdev->dev_no = *cfg_handle;
+		vdev->port_id = *id;
 	}
 
 	vdev->dev.parent = parent;