qapi/expr: Only explicitly prohibit 'Kind' nor 'List' for type names

Per list review: qapi-code-gen.txt reserves suffixes Kind and
List only for type names, but the code rejects them for events and
commands, too.

It turns out we reject them earlier anyway: In check_name_upper() for
event names, and in check_name_lower() for command names.

Still, adjust the code for clarity over what precisely we are guarding
against.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210421182032.3521476-15-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

scripts/qapi/expr.py

@@ -95,9 +95,9 @@ def check_defn_name_str(name: str, info: QAPISourceInfo, meta: str) -> None:
             permit_underscore=name in info.pragma.command_name_exceptions)
     else:
         check_name_camel(name, info, meta)
-    if name.endswith('Kind') or name.endswith('List'):
-        raise QAPISemError(
-            info, "%s name should not end in '%s'" % (meta, name[-4:]))
+        if name.endswith('Kind') or name.endswith('List'):
+            raise QAPISemError(
+                info, "%s name should not end in '%s'" % (meta, name[-4:]))
 
 
 def check_keys(value: _JSONObject,