matmul: replace include guards with #pragma once in common headers-ops-nn-AtomGit

Star887

Star887

已合并

matmul: replace include guards with #pragma once in common headers #3501

chenqi317创建于 4月2日从chenqi317/ops-nn_2： master 合入到 cann/ops-nn： master

matmul: replace include guards with #pragma once in common headers #3501

已合并

chenqi317创建于 4月2日

从chenqi317/ops-nn_2 master合入到cann/ops-nn master