[SPARC64]: Fix handling of multiple vdc-port nodes.

The "id" property in vdc-port nodes are not unique, they
are all zero.  Therefore assign ID's using the parent's
"cfg-handle" property which will be unique.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/vio.h b/include/asm-sparc64/vio.h
index c0a8d4e..f7417e9 100644
--- a/include/asm-sparc64/vio.h
+++ b/include/asm-sparc64/vio.h
@@ -275,6 +275,8 @@
 	char			compat[VIO_MAX_COMPAT_LEN];
 	int			compat_len;
 
+	u64			dev_no;
+
 	unsigned long		channel_id;
 
 	unsigned int		tx_irq;