hda-audio: Set instance_size at base class

Setting instance_size correctly at the base class will help us
avoid mistakes when declaring new subclasses.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200826171005.4055015-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/audio/hda-codec.c

@@ -898,6 +898,7 @@ static void hda_audio_base_class_init(ObjectClass *klass, void *data)
 static const TypeInfo hda_audio_info = {
     .name          = TYPE_HDA_AUDIO,
     .parent        = TYPE_HDA_CODEC_DEVICE,
+    .instance_size = sizeof(HDAAudioState),
     .class_init    = hda_audio_base_class_init,
     .abstract      = true,
 };
@@ -914,7 +915,6 @@ static void hda_audio_output_class_init(ObjectClass *klass, void *data)
 static const TypeInfo hda_audio_output_info = {
     .name          = "hda-output",
     .parent        = TYPE_HDA_AUDIO,
-    .instance_size = sizeof(HDAAudioState),
     .class_init    = hda_audio_output_class_init,
 };
 
@@ -930,7 +930,6 @@ static void hda_audio_duplex_class_init(ObjectClass *klass, void *data)
 static const TypeInfo hda_audio_duplex_info = {
     .name          = "hda-duplex",
     .parent        = TYPE_HDA_AUDIO,
-    .instance_size = sizeof(HDAAudioState),
     .class_init    = hda_audio_duplex_class_init,
 };
 
@@ -946,7 +945,6 @@ static void hda_audio_micro_class_init(ObjectClass *klass, void *data)
 static const TypeInfo hda_audio_micro_info = {
     .name          = "hda-micro",
     .parent        = TYPE_HDA_AUDIO,
-    .instance_size = sizeof(HDAAudioState),
     .class_init    = hda_audio_micro_class_init,
 };