fs: udf: udftime: Replace LGPL boilerplate with SPDX identifier

Replace license boilerplate in udftime.c with SPDX identifier for
LGPL-2.0.

Cc: Paul Eggert <eggert@twinsun.com>
Cc: Richard Fontana <rfontana@redhat.com>
Cc: Pali Rohár <pali@kernel.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230522005434.22133-3-bagasdotme@gmail.com>

fs/udf/udftime.c

+// SPDX-License-Identifier: LGPL-2.0+
 /* Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Paul Eggert (eggert@twinsun.com).
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   Contributed by Paul Eggert (eggert@twinsun.com). */
 
 /*
  * dgb 10/02/98: ripped this from glibc source to help convert timestamps