dtschema: Ensure generated property type output is sorted

Mainly for purposes of before and after comparisons of the processed
schemas, ensure the generated property type output is sorted.

Signed-off-by: Rob Herring <robh@kernel.org>

dtschema/lib.py

@@ -1044,7 +1044,7 @@ def make_property_type_cache():
         '$id': 'generated-types',
         '$filename': 'Generated property types',
         'select': False,
-        'properties': props
+        'properties': {k: props[k] for k in sorted(props)}
     }
 
     for val in pat_props.values():
@@ -1056,7 +1056,7 @@ def make_property_type_cache():
         '$id': 'generated-pattern-types',
         '$filename': 'Generated property types',
         'select': False,
-        'properties': pat_props
+        'properties': {k: pat_props[k] for k in sorted(pat_props)}
     }