drm/nouveau/kms: don't call drm_dp_cec_set_edid() on TMDS

RM complains very loudly at the aux transaction attempts.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230525003106.3853741-10-skeggsb@gmail.com

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -619,7 +619,10 @@ nouveau_connector_detect(struct drm_connector *connector, bool force)
 
 		nouveau_connector_set_encoder(connector, nv_encoder);
 		conn_status = connector_status_connected;
-		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
+
+		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
+			drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
+
 		goto out;
 	} else {
 		nouveau_connector_set_edid(nv_connector, NULL);