[clang] [llvm] Fix KCFI types for generated functions with integer normalization (PR #104826)

[Sami Tolvanen via cfe-commits]

samitolvanen wrote:

It would be nice to get this cherry-picked to 19.x, so the Rust kernel folks don't have to wait for LLVM 20: https://lore.kernel.org/lkml/202410281414.c351044e-oliver.sang@intel.com/

https://github.com/llvm/llvm-project/pull/104826