Enable AVX-VNNI 256-bit path for IQ4_NL R4 matmul#1467

ikawrakow merged 1 commit intoikawrakow:mainikawrakow/ik_llama.cpp:mainfrom

accaldwell:ac/vnni-iq4nl-r4-matmulaccaldwell/ik_llama.cpp:ac/vnni-iq4nl-r4-matmulCopy head branch name to clipboard