board/esd/cpci750/mv_eth.c: Fix license

The file header indicated that this file was GPL-2.0+, but actually
the code was derived from (Marvell based) Linux source code which is
only GPL-2.0.  Fix this.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Acked-by: Stefan Roese <sr@denx.de>

board/esd/cpci750/mv_eth.c

@@ -5,7 +5,7 @@
  * based on - Driver for MV64360X ethernet ports
  * Copyright (C) 2002 rabeeh@galileo.co.il
  *
- * SPDX-License-Identifier:	GPL-2.0+
+ * SPDX-License-Identifier:	GPL-2.0
  */
 
 /*
@@ -1025,21 +1025,6 @@ bool db64360_eth_start (struct eth_device *dev)
  * based on Linux code
  * arch/powerpc/galileo/EVB64360/mv64360_eth.c - Driver for MV64360X ethernet ports
  * Copyright (C) 2002 rabeeh@galileo.co.il
-
- * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
  */
 
 /********************************************************************************