samples: bluetooth: fast_pair: indicate the broken nRF54H20 DK target

Added a note to the documentation of the Fast Pair samples to warn the
user that the nRF54H20 DK no longers works with these projects.

Signed-off-by: Kamil Piszczek <[email protected]>

Author: kapi-no

samples/bluetooth/fast_pair/input_device/README.rst

@@ -27,6 +27,11 @@ The sample supports the following development kits:
 
 .. include:: /includes/tfm.txt
 
+.. note::
+   This sample does not build or run for the ``nrf54h20dk/nrf54h20/cpuapp`` board target due to the IronSide SE migration.
+   See the ``NCSDK-34821`` in the :ref:`known_issues` page for more information.
+   The codebase and documentation will be updated in the future releases to address this issue.
+
 Overview
 ********
 

samples/bluetooth/fast_pair/locator_tag/README.rst

@@ -26,6 +26,12 @@ The sample supports the following development kits:
 
 .. table-from-sample-yaml::
 
+.. note::
+   This sample does not build or run for the ``nrf54h20dk/nrf54h20/cpuapp`` board target due to the IronSide SE migration.
+   See the ``NCSDK-34821`` in the :ref:`known_issues` page for more information.
+   This documentation page may still refer to concepts that were valid before the IronSide SE migration (for example, to the SUIT solution).
+   The codebase and documentation will be updated in the future releases to address this issue.
+
 .. note::
    In case of the :zephyr:board:`nrf54h20dk` board target, the application still has high power consumption as the Bluetooth LE controller running on the radio core requires disabling MRAM latency (:kconfig:option:`CONFIG_MRAM_LATENCY_AUTO_REQ`).
    Enabling MRAM latency makes the Bluetooth LE controller unstable.