修改一下openwrt的分区表
位置在Tina5.0-V1.1-Old/openwrt/openwrt/target/linux/t113-方案名/base-files/etc/config

config 'mount'
        option  target          '/overlay'
        option  device          '/dev/by-name/UDISK'
        option  options         'rw,async'
        option  enabled         '1'