target-unicore32: Relicense to GPLv2+

Adopt the license text suggested by Guan Xue-tao (with a minor
simplification) for all target-unicore/ files except helper.c.

To helper.c Anthony Liguori contributed a qemu_malloc() -> g_malloc()
conversion, still pending IBM relicensing approval, so that remains
GPLv2 for now.

By relicensing all possible parts now, we avoid having to formally
relicense new, e.g., QOM code.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
Signed-off-by: NDor Laor <dlaor@redhat.com>

target-unicore32/cpu.h

@@ -5,7 +5,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
  */
 #ifndef __CPU_UC32_H__
 #define __CPU_UC32_H__

target-unicore32/helper.h

@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
  */
 #include "def-helper.h"
 

target-unicore32/op_helper.c

@@ -5,7 +5,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
  */
 #include "cpu.h"
 #include "dyngen-exec.h"

target-unicore32/translate.c

@@ -5,7 +5,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
  */
 #include <stdarg.h>
 #include <stdlib.h>