qom: Make InterfaceInfo[] uses const

Mechanical change using:

  $ sed -i -E 's/\(InterfaceInfo.?\[/\(const InterfaceInfo\[/g' \
              $(git grep -lE '\(InterfaceInfo.?\[\]\)')

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20250424194905.82506-7-philmd@linaro.org>

tests/unit/check-qom-interface.c

@@ -52,7 +52,7 @@ static const TypeInfo direct_impl_info = {
     .name = TYPE_DIRECT_IMPL,
     .parent = TYPE_OBJECT,
     .class_init = test_class_init,
-    .interfaces = (InterfaceInfo[]) {
+    .interfaces = (const InterfaceInfo[]) {
         { TYPE_TEST_IF },
         { }
     }

tests/unit/check-qom-proplist.c

@@ -164,7 +164,7 @@ static const TypeInfo dummy_info = {
     .instance_finalize = dummy_finalize,
     .class_size = sizeof(DummyObjectClass),
     .class_init = dummy_class_init,
-    .interfaces = (InterfaceInfo[]) {
+    .interfaces = (const InterfaceInfo[]) {
         { TYPE_USER_CREATABLE },
         { }
     }