[Headers][X86] amxintrin.h - fix attributes according to Intel SDM#122204

Merged

e-kud merged 2 commits intollvm:mainfrom

e-kud:amx-intrin

Jan 10, 2025

Commits on Jan 9, 2025

[Headers][X86] amxintrin.h - fix attributes according to SDM
e-kud
committed

Commits on Jan 10, 2025

Split the amx_api.c to create a regression test
e-kud
committed