infra/rdn2: update user guide for 2021.01.25 release

Update the RD-N2 platform user guide with the 2021.01.25 release tag
and the corresponding FVP version to use. There are couple of other
minor edits also included with this change.

Signed-off-by: Thomas Abraham <thomas.abraham@arm.com>
Change-Id: Ie33612e7330a479220181cbd297698d1f9dcfa5f

docs/infra/rdn2/user-guide.rst

 RD-N2 platform user guide
-=============================
+=========================
 
 .. contents::
 
@@ -29,7 +29,7 @@ stack on the Fixed Virtual Platform.
 
 
 Setting up the Host Machine and Syncing the software stack
------------------------------------------------------------
+----------------------------------------------------------
 
 Host Machine requirements and the necessary steps to be followed to sync the
 software stack are listed on '`Download sources`_' page.
@@ -49,14 +49,20 @@ folder, when asked for the install location, provide the absolute path of the
 ``fastmodel/refinfra``.
 
 
-Supported Features on RD-N2 Fixed Virtual Platform
---------------------------------------------------
+Supported Features by RD-N2 platform software stack
+---------------------------------------------------
 
 RD-N2 platform software stack supports the following features.
 
 - `Busybox Boot`_.
 - `Linux Distribution Boot`_.
 - `WinPE Boot`_.
+- `ACS Compliance Test`_.
+- `UEFI Secure Boot`_.
+
+
+Follow the links above for detailed information about the build and execute
+steps for each of the supported features.
 
 
 Release Tags
@@ -64,21 +70,27 @@ Release Tags
 
 Table below lists the release tags for the RD-N2 platform software stack and
 the corresponding RD-N2 FVP version that is recommended to be used along
-with the listed release tag.
+with the listed release tag. The summary of the changes introduced and tests
+validated in each release is listed in `change log`_.
 
 +-----------------------+-------------------------+
 |     Release Tag       |    RD-N2 FVP Version    |
 +=======================+=========================+
+|  RD-INFRA-2021.01.25  |       11.13.34          |
++-----------------------+-------------------------+
 |  RD-INFRA-2020.11.30  |       11.13.10          |
 +-----------------------+-------------------------+
 
 
 --------------
 
-*Copyright (c) 2020, Arm Limited. All rights reserved.*
+*Copyright (c) 2020-2021, Arm Limited. All rights reserved.*
 
 
 .. _Busybox Boot: docs/infra/common/busybox-boot.rst
 .. _Linux Distribution Boot: docs/infra/common/distro-boot.rst
 .. _WinPE Boot: docs/infra/common/winpe-boot.rst
 .. _Download sources: docs/infra/common/download-sources.rst
+.. _ACS Compliance Test: docs/infra/common/acs-test.rst
+.. _UEFI Secure Boot: docs/infra/common/secure-boot.rst
+.. _change log: docs/infra/change-log.rst