Merge patch series "a few test.py improvements"

David Lechner <dlechner@baylibre.com> says:

While trying to run the test suite for the first time, I encountered a
few minor issues. Here are a few patches to address them.

Link: https://lore.kernel.org/r/20260105-a-few-test-py-improvements-v3-0-fea38243ca5b@baylibre.com

doc/develop/pytest/usage.rst

@@ -90,6 +90,10 @@ environment.  This can be done via the following commands:
     $ . ./venv/bin/activate
     $ pip install -r test/py/requirements.txt
 
+In order to use the ``--build`` option of ``test.py`` there may be additional
+python packages required depending on the configuration being built. These can
+be found with ``find . -name "*.requirements*.txt"``.
+
 Testing sandbox
 ---------------