[clang] Sync with missing builtins from amd-staging (PR #223519)

[Patrick Simmons via cfe-commits]

linuxrocks123 wrote:

@arsenm the uses are in rocm-systems, which we can certainly migrate.  Could you give an example of how to do the migration?

More importantly, however, do you have reason to believe that no AMD customers are using these intrinsics in their own code?  If you do, please explain why no customers are likely to be using these.

https://github.com/llvm/llvm-project/pull/223519