Doc: Introduce changelog for 1.0 release

Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Change-Id: I0ae8d3a1fe64ada327ba8f95496657633a16160c
diff --git a/readme.rst b/readme.rst
index 2118ada..27778ef 100644
--- a/readme.rst
+++ b/readme.rst
@@ -20,6 +20,7 @@
 * `Platform Security Architecture`_
 * `PSA certified`_
 * `Documentation home`_
+* `Release notes`_
 * `Software requirements`_
 * `Build instructions`_
 * `User Guide`_
@@ -44,5 +45,6 @@
 .. _Trusted Firmware-M documentation: `Documentation home`_
 .. _Documentation home: https://ci.trustedfirmware.org/job/tf-m-build-test-nightly/lastSuccessfulBuild/artifact/build-docs/tf-m_documents/install/doc/user_guide/html/docs/readme.html
 .. _trustedfirmware.org: http://www.trustedfirmware.org
+.. _Release notes: https://ci.trustedfirmware.org/job/tf-m-build-test-nightly/lastSuccessfulBuild/artifact/build-docs/tf-m_documents/install/doc/user_guide/html/docs/changelog.html
 
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