net: dwc-xlgmac: declaration of dual license in headers

The driver "dwc-xlgmac" is dual-licensed. This patch adds
declaration of dual license in file headers.
Signed-off-by: NJie Deng <jiedeng@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/synopsys/dwc-xlgmac-common.c

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac-desc.c

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac-hw.c

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac-net.c

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac-reg.h

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of

drivers/net/ethernet/synopsys/dwc-xlgmac.h

@@ -2,10 +2,8 @@
  *
  * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
  *
- * 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 dual-licensed; you may select either version 2 of
+ * the GNU General Public License ("GPL") or BSD license ("BSD").
  *
  * This Synopsys DWC XLGMAC software driver and associated documentation
  * (hereinafter the "Software") is an unsupported proprietary work of