Merge tag 'rust-fixes-6.14' of https://github.com/Rust-for-Linux/linux

Merge tag 'rust-fixes-6.14' of https://github.com/Rust-for-Linux/linux

Pull rust fixes from Miguel Ojeda:

 - Do not export KASAN ODR symbols to avoid gendwarfksyms warnings

 - Fix future Rust 1.86.0 (to be released 2025-04-03) x86_64 builds

 - Clean future Rust 1.86.0 (to be released 2025-04-03) warning

 - Fix future GCC 15 (to be released in a few months) builds

 - Fix `rusttest` target in macOS

* tag 'rust-fixes-6.14' of https://github.com/Rust-for-Linux/linux:
  x86: rust: set rustc-abi=x86-softfloat on rustc>=1.86.0
  rust: kbuild: do not export generated KASAN ODR symbols
  rust: kbuild: add -fzero-init-padding-bits to bindgen_skip_cflags
  rust: init: use explicit ABI to clean warning in future compilers
  rust: kbuild: use host dylib naming in rusttestlib-kernel