List licenses used by other projects in README

Resolves COMPMID-5391

Signed-off-by: SiCong Li <sicong.li@arm.com>
Change-Id: Iafd42c80ffc7a9659e2b7bc820aefb39338b56c9
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/7900
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/README.md b/README.md
index 328a754..3e13815 100644
--- a/README.md
+++ b/README.md
@@ -129,6 +129,17 @@
 
 The software is provided under MIT license. Contributions to this project are accepted under the same license.
 
+### Other Projects
+This project contains code from other projects as listed below. The original license text is included in those source files.
+
+* The OpenCL header library is licensed under Apache License, Version 2.0, which is a permissive license compatible with MIT license.
+
+* The half library is licensed under MIT license.
+
+* The libnpy library is licensed under MIT license.
+
+* The stb image library is either licensed under MIT license or is in Public Domain. It is used by this project under the terms of MIT license.
+
 <br>
 
 ## Trademarks and Copyrights