drm/bridge_connector: use drm_kms_helper_connector_hotplug_event()

This adds more information to the hotplug uevent and lets user-space
know that it's about a particular connector only.
Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230620175506.263109-1-contact@emersion.fr

drivers/gpu/drm/drm_bridge_connector.c

@@ -125,7 +125,7 @@ static void drm_bridge_connector_hpd_cb(void *cb_data,
 
 	drm_bridge_connector_hpd_notify(connector, status);
 
-	drm_kms_helper_hotplug_event(dev);
+	drm_kms_helper_connector_hotplug_event(connector);
 }
 
 static void drm_bridge_connector_enable_hpd(struct drm_connector *connector)