kernel.org LLVM + Rust toolchains

[Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>]

Hi all,

kernel.org is now hosting prebuilt stable versions of LLVM+Rust
toolchains, thanks to Nathan Chancellor (ClangBuiltLinux):

    https://kernel.org/pub/tools/llvm/rust/

These are the same slim and fast LLVM toolchains provided there in the
parent folder [1] with versions of Rust added to them that Rust for
Linux supports, depending on the Linux version. Two sets are provided
for each supported kernel release: the "latest LLVM" and "matching
LLVM" (please see the link for more information).

They are also now linked in the Rust for Linux webpage [2] (left side,
in "Links" -> "Toolchains"), as well as in the kernel documentation
Quick Start guide [3] soon (patch [4]).

Cheers,
Miguel

[1] https://kernel.org/pub/tools/llvm/
[2] https://rust-for-linux.com
[3] https://docs.kernel.org/rust/quick-start.html
[4] https://lore.kernel.org/rust-for-linux/20240517170615.377786-1-ojeda@kernel.org/