[bsp]update GPL license to Apache-2.0, and format files

bsp/raspberry-pi/raspi3-64/link.lds

@@ -1,20 +1,7 @@
 /*
- * File      : link.lds
- * COPYRIGHT (C) 2017, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program 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 General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * 2017-5-30     bernard       first version
@@ -40,7 +27,7 @@ SECTIONS
         *(.gnu.linkonce.t*)
 
         *(COMMON)
-        
+
         /* section information for finsh shell */
         . = ALIGN(16);
         __fsymtab_start = .;
@@ -110,7 +97,7 @@ SECTIONS
         *(.bss)
         *(.bss.*)
         *(.dynbss)
-        
+
         PROVIDE(__bss_end = .);
     }
     _end = .;