mISDN: Add watchdog functionality to hfcmulti driver

This patch was made by Titus Moldovan and provides IOCTL functions for enabling
and disabling the controller's built in watchdog. The use is optional.

Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 5da3d95..cf97459 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -362,7 +362,8 @@
 #define MISDN_CTRL_HFC_RECEIVE_ON	0x4006
 #define MISDN_CTRL_HFC_ECHOCAN_ON 	0x4007
 #define MISDN_CTRL_HFC_ECHOCAN_OFF 	0x4008
-
+#define MISDN_CTRL_HFC_WD_INIT		0x4009
+#define MISDN_CTRL_HFC_WD_RESET		0x400A
 
 /* socket options */
 #define MISDN_TIME_STAMP		0x0001