drm/bridge/tc358764: fix drm helper name

Recently drm_mode_connector_attach_encoder changed it's name. The change
was not noticed by bridge author, as a result gcc reports compile error
on next branch.

Fixes: f38b7cca ("drm/bridge: tc358764: Add DSI to LVDS bridge driver")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180727094859.27727-1-a.hajda@samsung.com

drivers/gpu/drm/bridge/tc358764.c

@@ -361,7 +361,7 @@ static int tc358764_attach(struct drm_bridge *bridge)
 
 	drm_connector_helper_add(&ctx->connector,
 				 &tc358764_connector_helper_funcs);
-	drm_mode_connector_attach_encoder(&ctx->connector, bridge->encoder);
+	drm_connector_attach_encoder(&ctx->connector, bridge->encoder);
 	drm_panel_attach(ctx->panel, &ctx->connector);
 	ctx->connector.funcs->reset(&ctx->connector);
 	drm_fb_helper_add_one_connector(drm->fb_helper, &ctx->connector);