[clang] [llvm] cuda clang: Fix argument order for __reduce_max_sync (PR #132881)

[Austin Schuh via llvm-commits]

AustinSchuh wrote:

> @AustinSchuh would you like me to merge the change for you, once the checks are done?

That would be wonderful.  I don't know how to merge it (happy to learn, but I suspect I won't do it more than a couple of times)

https://github.com/llvm/llvm-project/pull/132881