Fix hk1box the Ethernet does not working

I use the latest armbian image from the website of https://users.armbian.com/balbes150/arm-64/. The armbian version is armbian-20.10. It can be applied to the products of amlogic s905-x3 chip.

Step 1:  
    upload three dtbs into /boot/dtb/amlogic :
    meson-sm1-x96-max-plus-100m.dtb
    meson-sm1-x96-max-plus.dtb
    meson-sm1-hk1box-vontar-x3.dtb  (Similar to meson-sm1-x96-max-plus.dtb, only the modal name is changed)

Step 2:  
modify /boot/extlinux/extlinux.conf, replace dtb with meson-sm1-x96-max-plus-100m.dtb,  restart the Armbian system

Step 3:  
upload hk1box-bootloader.img to /tmp

Step 4:  
Run these commands under the shell:
dd if=/tmp/hk1box-bootloader.img of=/dev/mmcblk2 bs=1 count=442
dd if=/tmp/hk1box-bootloader.img of=/dev/mmcblk2 bs=512 skip=1 seek=1
sync
reboot

Step 5:  
modify /boot/extlinux/extlinux.conf, replace dtb with meson-sm1-x96-max-plus.dtb, and restart again.

Below is the files package.