I was able to make it work with 5.12 and wrote about it in replies #967 and #970:
(Add the respective header files of the kernel version that you are running)
Manjaro arm on Amlogic Tv box? - #967 by TheMojoMan and here Manjaro arm on Amlogic Tv box? - #970 by TheMojoMan
You can find the new dkms driver and sources in my MEGA folder: 3.58 MB file on MEGA
The key to make it compile correctly was to change ‘GRO_DROP’ to ‘GRO_MERGED_FREE’ in ‘recv_linux.c’ (not deleting anything).
Thanks for writing such a great wiki article and your fantastic contributions to this forum!