7869d16545 changed how resource files are
installed. Likely by accident, now some of the resource files are
installed to $dev/include instead of $out/share. This causes the cc
wrapper's resource-root to miss those files from compiler-rt as they are
in a different place than expected.
This commit fixes all instances of this incorrect installation for
llvmPackages_10, 11 and 12 which are the only llvm package sets which
link ${targetLlvmLibraries.compiler-rt.out}/share to the resource-root.
For the other llvm package set this will likely also need to be fixed,
but it doesn't have to have immediate urgency and doing it in two steps
allows us to (hopefully) fix the chromium build without causing a darwin
stdenv rebuild.
The full fix can be found in #123103 and should probably be included in
the next staging-next rotation.
91cba7b0a9