[clang] [X86] Change target of __builtin_ia32_cmp[p|s][s|d] from avx into sse/sse2 (PR #84136)

[Simon Pilgrim via cfe-commits]

https://github.com/RKSimon commented:

Should we update the existing SSE/SSE2 cmpeq/cmplt intinsics to use __builtin_ia32_cmp* instead of __builtin_ia32_cmpeq??/__builtin_ia32_cmplt?? etc?

https://github.com/llvm/llvm-project/pull/84136