uml: fix nonremovability of watchdog

The UML watchdog driver was using the wrong config variable to control whether
it can be unloaded once active.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index 5560168..a9ad4bd 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -69,7 +69,7 @@
 	spin_lock(&lock);
 	if(timer_alive)
 		goto err;
-#ifdef CONFIG_HARDDOG_NOWAYOUT
+#ifdef CONFIG_WATCHDOG_NOWAYOUT
 	__module_get(THIS_MODULE);
 #endif