drm/vc4: vec: Use TV Reset implementation

The analog TV properties created by the drm_mode_create_tv_properties() are
not properly initialised at reset. Let's switch our implementation to call
drm_atomic_helper_connector_tv_reset().
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-in-principle-or-something-like-that-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v10-15-256dad125326@cerno.techSigned-off-by: Maxime Ripard <maxime@cerno.tech>

drivers/gpu/drm/vc4/vc4_vec.c

@@ -268,6 +268,12 @@ vc4_vec_connector_detect(struct drm_connector *connector, bool force)
 	return connector_status_unknown;
 }
 
+static void vc4_vec_connector_reset(struct drm_connector *connector)
+{
+	drm_atomic_helper_connector_reset(connector);
+	drm_atomic_helper_connector_tv_reset(connector);
+}
+
 static int vc4_vec_connector_get_modes(struct drm_connector *connector)
 {
 	struct drm_connector_state *state = connector->state;
@@ -288,7 +294,7 @@ static int vc4_vec_connector_get_modes(struct drm_connector *connector)
 static const struct drm_connector_funcs vc4_vec_connector_funcs = {
 	.detect = vc4_vec_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
-	.reset = drm_atomic_helper_connector_reset,
+	.reset = vc4_vec_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };