dpaa2-eth: name the debugfs directory after the DPNI object

Name the debugfs directory after the DPNI object instead of the netdev
name since this can be changed after probe by udev rules.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c

@@ -121,10 +121,14 @@ DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch);
 
 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
 {
+	struct fsl_mc_device *dpni_dev;
 	struct dentry *dir;
+	char name[10];
 
 	/* Create a directory for the interface */
-	dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root);
+	dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
+	snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id);
+	dir = debugfs_create_dir(name, dpaa2_dbg_root);
 	priv->dbg.dir = dir;
 
 	/* per-cpu stats file */