The Adreno kext, the Metal plug-in, air2ir3, SnapI2CHID and SnapQCC2072 now
live in their own repositories in the Snapintosh organization, split with
their history (git filter-repo --subdirectory-filter). They are mounted
back at their old paths, so relative build paths in build.sh, the tools
and the includes are unchanged. The EL2 monitor, tools and docs stay in
this repository.
Validation: see the follow-up verification on a fresh recursive clone.