环境: MT6737 AndroidN

需求：屏蔽factory mode

修改：

vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/boot_mode.c

注释这段代码：

        if (!factory_forbidden) {                                                                                                                                  |~                                  if (mtk_detect_key(MT65XX_FACTORY_KEY)) {                                                                                                              |~                                  dprintf(INFO, "%s Detect key\n",MODULE_NAME);                                                                                                      |~                                  dprintf(INFO, "%s Enable factory mode\n",MODULE_NAME);                                                                                             |~                                  g_boot_mode = FACTORY_BOOT;                                                                                                                        |~                                  //video_printf("%s : detect factory mode !\n",MODULE_NAME);                                                                                        |~                                  return TRUE;                                                                                                                                       |~                                  }                                                                                                                                                      |~                                  } 

vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/factory.c

函数：factory_check_key_trigger 返回 FALSE