IVGCVSW-7089 Add LICENSE.spdx for Arm NN

Signed-off-by: Jim Flynn <jim.flynn@arm.com>
Change-Id: I6e5f41a7a4432f448156755389c108692b7213e2
diff --git a/third-party/half/LICENSE.spdx b/third-party/half/LICENSE.spdx
new file mode 100644
index 0000000..d71fa7d
--- /dev/null
+++ b/third-party/half/LICENSE.spdx
@@ -0,0 +1,7 @@
+PackageName: half
+SPDXID: SPDXRef-half
+FilesAnalyzed: true
+PackageLicenseConcluded: MIT
+PackageLicenseInfoFromFiles: MIT
+PackageLicenseDeclared: MIT
+PackageCopyrightText:<text>Copyright (c) 2012-2017 Christian Rau <rauy@users.sourceforge.net></text>