[clang] [llvm] [X86][AVX10.2] Decouple AMX-AVX512 from AVX10.2 (PR #148633)

[Evgenii Kudriashov via llvm-commits]

e-kud wrote:

TBH I'm not sure if we need to add `avx512f,evex512` to intrinsics attributes and/or to `.td` as well.

https://github.com/llvm/llvm-project/pull/148633