f2fs: fix to show simulate_lock_timeout correctly

Commit d36de29 ("f2fs: sysfs: introduce inject_lock_timeout")
introduces a bug as below, fix it.

cat /sys/fs/f2fs/vdx/inject_lock_timeout
s/fs/f2fs/vdx/inject_lock_timeout: Invalid argument

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: chaseyu

fs/f2fs/sysfs.c

@@ -86,7 +86,8 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
 		return (unsigned char *)sbi;
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 	else if (struct_type == FAULT_INFO_RATE ||
-					struct_type == FAULT_INFO_TYPE)
+		struct_type == FAULT_INFO_TYPE ||
+		struct_type == FAULT_INFO_TIMEOUT)
 		return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
 #endif
 #ifdef CONFIG_F2FS_STAT_FS