[ISDN]: Change I4L to use alloc_netdev().

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/isdn.h b/include/linux/isdn.h
index a6fb366..ad09506 100644
--- a/include/linux/isdn.h
+++ b/include/linux/isdn.h
@@ -382,7 +382,7 @@
 					  online                           */
   spinlock_t queue_lock;               /* lock to protect queue            */
   void *next;                          /* Pointer to next isdn-interface   */
-  struct net_device dev;               /* interface to upper levels        */
+  struct net_device *dev;              /* interface to upper levels        */
 #ifdef CONFIG_ISDN_PPP
   ippp_bundle * pb;		/* pointer to the common bundle structure
    			         * with the per-bundle data */