doc: update TF-M requirements

The TF-M requirements document contained a hard-coded list of Python
packages which is incomplete and can easily drift out of sync with the
TF-M project. Replace this list with a reference to TF-M’s own
``tools/requirements.txt`` so that all required dependencies are covered.

Also update the list of boards that support TF-M.

Signed-off-by: Sudan Landge <[email protected]>

Author: wearyzen

doc/services/tfm/requirements.rst

@@ -11,7 +11,13 @@ The following are some of the boards that can be used with TF-M:
    * - :ref:`mps2_an521_board`
      - ``mps2/an521/cpu0/ns`` (qemu supported)
    * - :ref:`mps3_board`
-     - ``mps3/corstone300/an547/ns`` (qemu supported)
+     -
+       - ``mps3/corstone300/fvp/ns`` (armfvp supported)
+       - ``mps3/corstone310/fvp/ns`` (armfvp supported)
+   * - :zephyr:board:`mps4`
+     -
+       - ``mps4/corstone315/fvp/ns`` (armfvp supported)
+       - ``mps4/corstone320/fvp/ns`` (armfvp supported)
    * - :zephyr:board:`bl5340_dvk`
      - ``bl5340_dvk/nrf5340/cpuapp/ns``
    * - :zephyr:board:`lpcxpresso55s69`
@@ -38,21 +44,15 @@ is set to ``y`` in that board's default configuration.
 Software Requirements
 *********************
 
-The following Python modules are required when building TF-M binaries:
-
-* cryptography
-* pyasn1
-* pyyaml
-* cbor>=1.0.0
-* imgtool>=1.9.0
-* jinja2
-* click
+The Python modules required when building TF-M binaries are listed in the
+TF-M repository under ``tools/requirements.txt``. Because module locations
+can vary across workspaces, use ``west`` to locate TF-M before installing.
 
 You can install them via:
 
    .. code-block:: bash
 
-      $ pip3 install --user cryptography pyasn1 pyyaml cbor>=1.0.0 imgtool>=1.9.0 jinja2 click
+      $ pip3 install -r "$(west list trusted-firmware-m -f '{abspath}')/tools/requirements.txt"
 
 They are used by TF-M's signing utility to prepare firmware images for
 validation by the bootloader.