linux-firmware: add NXP firmware licence file

Signed-off-by: James Cao <james.cao@nxp.com>
Signed-off-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>

LICENCE.NXP

+Copyright © 2019.  NXP B.V.  All rights reserved.
+
+Redistribution and use in binary form is permitted provided that the following
+conditions are met:
+
+1. Redistributions must reproduce the above copyright notice, this list of
+conditions and the following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+2. Redistribution and use shall be used only with NXP B.V. silicon products.
+Any other use, reproduction, modification, translation, or compilation of the
+Software is prohibited.
+
+3. No reverse engineering, decompilation, or disassembly is permitted.
+
+TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THIS SOFTWARE IS PROVIDED
+"AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING, WITHOUT LIMITATION, ANY EXPRESS
+OR IMPLIED WARRANTIES OF MERCHANTABILITY, ACCURACY, FITNESS OR SUFFICIENCY FOR A
+PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, QUIET
+ENJOYMENT OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.
+NXP B.V., ITS AFFILIATES AND THEIR SUPPLIERS DISCLAIM ANY WARRANTY THAT THE
+DELIVERABLES WILL OPERATE WITHOUT INTERRUPTION OR BE ERROR-FREE.

WHENCE

@@ -771,8 +771,8 @@ Version: W16.68.1.p179
 File: mrvl/sdsd8977_combo_v2.bin
 Version: W16.68.1.p195
 
-Licence: Redistributable. See LICENCE.Marvell for details.  Originates from
-http://git.marvell.com/?p=mwifiex-firmware.git
+Licence: Redistributable. See LICENCE.NXP for details.  Originates from
+https://github.com/NXP/mwifiex-firmware.git
 
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