Under ubuntu 24.04, when multiple version of clang/llvm installed, the rust-bindgen won't working


https://gitlab.freedesktop.org/mesa/mesa/-/issues/11869

For example, both clang-19 llvm-19 and clang-20 llvm-20 are installed, then the following header
can not generated rust bind

```c
#include <stdatomic.h>

struct nouveau_ws_bo {
   atomic_uint_fast32_t refcnt;
};

```