[OpenMP][host runtime] Add initial hybrid CPU support

Detect, through CPUID.1A, and show user different core types through
KMP_AFFINITY=verbose mechanism. Offer future runtime optimizations
 __kmp_is_hybrid_cpu() to know whether running on a hybrid system or not.

Differential Revision: https://reviews.llvm.org/D110435

GitOrigin-RevId: acb3b187c4c88650a6a717a1bcb234d27d0d7f54
5 files changed