[QNNPACK] Block Sparse kernel. First commit. (#50585)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50585
This diff introduces sparse kenel for sse. Uses 1x4 block sparse
pattern.
Test Plan:
./build/local/q8gemm-sparse-test
Imported from OSS
Reviewed By: AshkanAliabadi
Differential Revision: D25925500
fbshipit-source-id: e112cafd3226f8c11487c139cd414fa53a58fd0d
