Add LGPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/lib/ldiv.c b/lib/ldiv.c
index 5d231a2..8e11333 100644
--- a/lib/ldiv.c
+++ b/lib/ldiv.c
@@ -1,20 +1,8 @@
 /* Copyright (C) 1992, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   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.  */
+ * SPDX-License-Identifier:	LGPL-2.0+
+ */
 
 typedef struct {
 	long    quot;