[clang] [llvm] [AArch64][clang][llvm] Add support for Armv9.7-A lookup table intrinsics (PR #187046)

[Kerry McLaughlin via cfe-commits]

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kmclaughlin-arm wrote:

I don't think these are necessary, as they aren't really testing anything added by this PR? The `Intrinsic has incorrect return type` error wasn't added here and there should be existing tests for it elsewhere.

https://github.com/llvm/llvm-project/pull/187046