watchdog: correct the name of the watchdog_core inlude file

The watchdog_core include file should have been named
watchdog_core.h and not watchdog_dev.h . Correct this.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/watchdog_core.c

@@ -35,7 +35,7 @@
 #include <linux/watchdog.h>	/* For watchdog specific items */
 #include <linux/init.h>		/* For __init/__exit/... */
 
-#include "watchdog_dev.h"	/* For watchdog_dev_register/... */
+#include "watchdog_core.h"	/* For watchdog_dev_register/... */
 
 /**
  * watchdog_register_device() - register a watchdog device

drivers/watchdog/watchdog_dev.c

@@ -42,7 +42,7 @@
 #include <linux/init.h>		/* For __init/__exit/... */
 #include <linux/uaccess.h>	/* For copy_to_user/put_user/... */
 
-#include "watchdog_dev.h"
+#include "watchdog_core.h"
 
 /* make sure we only register one /dev/watchdog device */
 static unsigned long watchdog_dev_busy;