[clang] [Clang] Diagnose conflict between always_inline/noinline attributes (PR #215173)

[Erich Keane via cfe-commits]

erichkeane wrote:

I enabled auto-merge, and did a 'update' as teh first version of the linux build seemed to have a problem with infra, so did the update to retrigger.

https://github.com/llvm/llvm-project/pull/215173