AVX_VNNI support?

[amitdo]

It seem you don't support it.

Alder Lake has AVX_VNNI. The next desktop and server CPUs from Intel will have it.

[amitdo]

https://github.com/tensorflow/tensorflow/blob/18d203b1ef84b1/tensorflow/core/platform/cpu_info.cc#L226

[toor1245]

@amitdo, thanks for the issue. According to documentation, intel-architecture-instruction-set-extensions-programming-reference 27 page we can add it

To add it we need to features->avx_vnni = IsBitSet(leaf_7_1.eax, 4);

Processors that support this feature:
https://wiki.alquds.edu/?query=Advanced_Vector_Extensions#AVX-VNNI

[Mizux]

closed by #264

[amitdo]

@toor1245, thanks.