docs: update change-log

Update change-log and release notes to capture changes made since
previous master branch update.

Change-Id: I77da57cf83c99a302ee82fe4d2480f428a957b7c
Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
diff --git a/docs/developer/supported-architectural-features.rst b/docs/developer/supported-architectural-features.rst
index 4197b97..b75c6da 100644
--- a/docs/developer/supported-architectural-features.rst
+++ b/docs/developer/supported-architectural-features.rst
@@ -1,6 +1,8 @@
 Supported Architectural Features
 ================================
 
+.. _branch_protection:
+
 Branch Protection
 -----------------