From v9.0.0 changelog:
lv_disp_drv_tandlv_disp_draw_buf_twas removed- To create a display and set it up:
lv_display_t * disp = lv_display_create(hor_res, ver_res);
lv_display_set_flush_cb(disp, flush_cb);
lv_display_set_buffers(disp, buf1, buf2, buf_size_in_bytes, mode);