[flang][OpenMP] Introduce OmpHintClause, simplify OmpAtomicClause#136311

kparzysz merged 1 commit intomainllvm/llvm-project:mainfrom

users/kparzysz/spr/h01-hintllvm/llvm-project:users/kparzysz/spr/h01-hintCopy head branch name to clipboard