Fix: Linux Next

[babiulep]

In linux-next (next-20251027) Eric Biggers has changed the BLAKE2b library API.
This breaks the compilation of the amneziawg kernel module.

I've created a patch for this:
https://github.com/babiulep/my-kernel-patches/blob/main/AMNEZIAWG/blake2s.patch

How to use:
Create a directory in de amneziawg source folder named 'patches' and put the patch file there.
Add: PATCH[0]="blake2s.patch" to dkms.conf (If you have other patches adjust the '0').
Recompile

Greetings!