Add documentation on tools & demo deployments

Adds documentation covering tools and demo deployments.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: I4d224a71b559384c9e0915447934f08067477d1e
diff --git a/docs/developer/deployments/tools-demo-apps.rst b/docs/developer/deployments/tools-demo-apps.rst
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+Tools & Demo Applications
+=========================
+The following deployments are concerned with building tools and demo applications.
+
+platform-inspect
+----------------
+The *platform-inspect* tool may be run from a Linux terminal to inspect and
+report information about platform firmware. Functionality is currently limited
+to retrieving a firmware attestation report and printing its contents.
+
+.. list-table::
+  :widths: 1 2
+  :header-rows: 0
+
+  * - Supported Environments
+    - * | *linux-pc*
+      * | *arm-linux*
+  * - Used for
+    - * | Obtaining information about platform firmware
+
+ts-demo
+-------
+*ts-demo* is a simple application that uses the Crypto service to perform some
+typical sign, verify and encrypt operations. It is intended to be used as an
+example of how trusted services can be used by userspace applications.
+
+.. list-table::
+  :widths: 1 2
+  :header-rows: 0
+
+  * - Supported Environments
+    - * | *linux-pc*
+      * | *arm-linux*
+  * - Used for
+    - * | Provides an example for how to use trusted services
+
+--------------
+
+*Copyright (c) 2022, Arm Limited and Contributors. All rights reserved.*
+
+SPDX-License-Identifier: BSD-3-Clause