docs: enable Sphinx autodoc extension to allow documenting python

Adding python documentation is simple with Sphinx: all we need
is to include the ext.autodoc extension and add the directories
where the Python code sits at the sys.path.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <29cbe375dc418d6fa5793f55199799b5b52dcd38.1768838938.git.mchehab+huawei@kernel.org>

Author: mchehab

Documentation/conf.py

@@ -19,6 +19,10 @@
 # Add location of Sphinx extensions
 sys.path.insert(0, os.path.join(kern_doc_dir, "sphinx"))
 
+# Allow sphinx.ext.autodoc to document files at tools and scripts
+sys.path.append(os.path.join(kern_doc_dir, "..", "tools"))
+sys.path.append(os.path.join(kern_doc_dir, "..", "scripts"))
+
 # Minimal supported version
 needs_sphinx = "3.4.3"
 
@@ -152,6 +156,7 @@ def have_command(cmd):
     "maintainers_include",
     "parser_yaml",
     "rstFlatTable",
+    "sphinx.ext.autodoc",
     "sphinx.ext.autosectionlabel",
     "sphinx.ext.ifconfig",
     "translations",