[mlir][OpenMP][llvm]Atomic control backend #143769
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Atomic Control Options are used to specify architectural characteristics to help lowering of atomic operations. The options used are:
-f[no-]atomic-remote-memory,-f[no-]atomic-fine-grained-memory,-f[no-]atomic-ignore-denormal-mode.Legacy option
-m[no-]unsafe-fp-atomicsis aliased to-f[no-]ignore-denormal-mode.More details can be found in #102569. This PR implements the llvm support for these options with OpenMP atomic.