Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/fhandle.c b/fs/fhandle.c
index 0ee7274..01263ff 100644
--- a/fs/fhandle.c
+++ b/fs/fhandle.c
@@ -246,7 +246,7 @@
  * sys_open_by_handle_at: Open the file handle
  * @mountdirfd: directory file descriptor
  * @handle: file handle to be opened
- * @flag: open flags.
+ * @flags: open flags.
  *
  * @mountdirfd indicate the directory file descriptor
  * of the mount point. file handle is decoded relative