hvcs: fix typo in comment

Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Reviewed-by: NJesper Juhl <jj@chaosbits.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/tty/hvc/hvcs.c

@@ -292,7 +292,7 @@ struct hvcs_struct {
 	/*
 	 * Any variable below the kref is valid before a tty is connected and
 	 * stays valid after the tty is disconnected.  These shouldn't be
-	 * whacked until the koject refcount reaches zero though some entries
+	 * whacked until the kobject refcount reaches zero though some entries
 	 * may be changed via sysfs initiatives.
 	 */
 	struct kref kref; /* ref count & hvcs_struct lifetime */