watchdog: octeon: Remove unneeded linux/miscdevice.h include

watchdog/octeon-wdt-main.c does not use any miscdevice so this patch
remove this unnecessary inclusion.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/watchdog/octeon-wdt-main.c

@@ -56,7 +56,6 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/miscdevice.h>
 #include <linux/interrupt.h>
 #include <linux/watchdog.h>
 #include <linux/cpumask.h>