devtmpfs: simplify initialization of mount_dev

Avoid a bit of ifdeffery by using the IS_ENABLED() helper.

Signed-off-by: Rasmus Villemoes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Villemoes

drivers/base/devtmpfs.c

@@ -30,11 +30,7 @@
 
 static struct task_struct *thread;
 
-#if defined CONFIG_DEVTMPFS_MOUNT
-static int mount_dev = 1;
-#else
-static int mount_dev;
-#endif
+static int mount_dev = IS_ENABLED(CONFIG_DEVTMPFS_MOUNT);
 
 static DEFINE_SPINLOCK(req_lock);