Use libclang pip package instead of clang

clang pip package is not maintained anymore which makes it incompatible
with recent clang libraries. Move to libclang as it is up-to-date and
well maintained.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: Ida6eb61015645bd529e8dec880f8febef707fab9
diff --git a/docs/project/change-log.rst b/docs/project/change-log.rst
index 037f6da..0bcc246 100644
--- a/docs/project/change-log.rst
+++ b/docs/project/change-log.rst
@@ -3,6 +3,14 @@
 
 This document contains a summary of the new features, changes, fixes and known issues in each release of Trusted Services.
 
+Version 1.0.1
+-------------
+
+Changes
+^^^^^^^
+Use libclang pip dependency instead of clang.
+
+
 Version 1.0.0
 -------------
 
@@ -26,4 +34,4 @@
 
 *Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved.*
 
-SPDX-License-Identifier: BSD-3-Clause
+SPDX-License-Identifier: BSD-3-Clause
\ No newline at end of file