drm/vc4: Provide ddc symlink in connector sysfs directory

Use the ddc pointer provided by the generic connector.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200102132300.24309-3-andrzej.p@collabora.com

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -267,7 +267,8 @@ static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs =
 };
 
 static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
-						     struct drm_encoder *encoder)
+						     struct drm_encoder *encoder,
+						     struct i2c_adapter *ddc)
 {
 	struct drm_connector *connector;
 	struct vc4_hdmi_connector *hdmi_connector;
@@ -281,8 +282,10 @@ static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,
 
 	hdmi_connector->encoder = encoder;
 
-	drm_connector_init(dev, connector, &vc4_hdmi_connector_funcs,
-			   DRM_MODE_CONNECTOR_HDMIA);
+	drm_connector_init_with_ddc(dev, connector,
+				    &vc4_hdmi_connector_funcs,
+				    DRM_MODE_CONNECTOR_HDMIA,
+				    ddc);
 	drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs);
 
 	/* Create and attach TV margin props to this connector. */
@@ -1395,7 +1398,8 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 			 DRM_MODE_ENCODER_TMDS, NULL);
 	drm_encoder_helper_add(hdmi->encoder, &vc4_hdmi_encoder_helper_funcs);
 
-	hdmi->connector = vc4_hdmi_connector_init(drm, hdmi->encoder);
+	hdmi->connector =
+		vc4_hdmi_connector_init(drm, hdmi->encoder, hdmi->ddc);
 	if (IS_ERR(hdmi->connector)) {
 		ret = PTR_ERR(hdmi->connector);
 		goto err_destroy_encoder;