drm/bridge: lt8912b: use drm_bridge_edid_read()

Prefer using the struct drm_edid based functions.

cc: Adrien Grassein <adrien.grassein@gmail.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/32c9b52fe6fa7cbad6bfd0ff00041876977e02ea.1706038510.git.jani.nikula@intel.com

drivers/gpu/drm/bridge/lontium-lt8912b.c

@@ -440,16 +440,16 @@ lt8912_connector_mode_valid(struct drm_connector *connector,
 
 static int lt8912_connector_get_modes(struct drm_connector *connector)
 {
-	struct edid *edid;
+	const struct drm_edid *drm_edid;
 	int ret = -1;
 	int num = 0;
 	struct lt8912 *lt = connector_to_lt8912(connector);
 	u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
 
-	edid = drm_bridge_get_edid(lt->hdmi_port, connector);
-	if (edid) {
-		drm_connector_update_edid_property(connector, edid);
-		num = drm_add_edid_modes(connector, edid);
+	drm_edid = drm_bridge_edid_read(lt->hdmi_port, connector);
+	if (drm_edid) {
+		drm_edid_connector_update(connector, drm_edid);
+		num = drm_edid_connector_add_modes(connector);
 	} else {
 		return ret;
 	}
@@ -459,7 +459,7 @@ static int lt8912_connector_get_modes(struct drm_connector *connector)
 	if (ret)
 		num = ret;
 
-	kfree(edid);
+	drm_edid_free(drm_edid);
 	return num;
 }