mISDN: Help to identify the card

With multiple cards is hard to figure out which port caused trouble
int the layer2 routines (e.g. got a timeout).
Now we have the informations in the log output.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 9cc8ce5..ce6e613 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -37,7 +37,7 @@
  */
 #define	MISDN_MAJOR_VERSION	1
 #define	MISDN_MINOR_VERSION	1
-#define MISDN_RELEASE		27
+#define MISDN_RELEASE		28
 
 /* primitives for information exchange
  * generell format
@@ -591,6 +591,7 @@
 extern void	set_channel_address(struct mISDNchannel *, u_int, u_int);
 extern void	mISDN_clock_update(struct mISDNclock *, int, struct timeval *);
 extern unsigned short mISDN_clock_get(void);
+extern const char *mISDNDevName4ch(struct mISDNchannel *);
 
 #endif /* __KERNEL__ */
 #endif /* mISDNIF_H */