Turbopack: Use lld again on ARM64 glibc Linux (#92860)
`lld` is much faster than the default gnu `ld` linker on most Linux
systems.
Timeline:
- https://github.com/vercel/next.js/pull/91477 removed these flags as
part of cleanup because they're now default on x86-64 glibc linux.
However, they are not default on arm64.
- https://github.com/vercel/next.js/pull/91799 removed these flags from
musl, and lost the comment explaining reason for the `gnu-lld-cc`
option.
Without this change, doing a dev build of a trivial change to
`crates/next-napi-bindings/src/lib.rs` can take over a minute.
I tested this by looking at htop near the end of a build and observing
`lld` instead of `ld`.
