doc: scripts: board catalog: skip zephyr compats

Skip "zephyr,xxx" compats when collecting data for the new Supported
Features table, since they don't represent hardware features.

Signed-off-by: Abderrahmane JARMOUNI <git@jarmouni.me>

Author: JarmouniA

doc/_scripts/gen_boards_catalog.py

@@ -263,6 +263,10 @@ def get_catalog(generate_hw_features=False):
                     if node.matching_compat is None:
                         continue
 
+                    # skip "zephyr,xxx" compatibles
+                    if node.matching_compat.startswith("zephyr,"):
+                        continue
+
                     description = DeviceTreeUtils.get_cached_description(node)
                     filename = node.filename
                     lineno = node.lineno