[SYCL] Move SPIR-V atomic builtins declarations into clang/lib/Sema/SPIRVBuiltins.td#17471

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wenju-he wants to merge 5 commits intointel:syclfrom wenju-he:move-atomic-builtin-to-SPIRVBuiltins.td

Commits on Mar 14, 2025

[SYCL] Move SPIR-V atomic builtins declarations into clang/lib/Sema/SPIRVBuiltins.td
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Commits on Mar 17, 2025

Commits on Mar 20, 2025

add clang test
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