“94a520f09e452c053cc1241b4d45018cc1cce38a”上不存在“micro/ops/nhwc/cmsis_nn/arm_softmax_int8.h”
* Optimize key creation of INT8 pool kernel to improve the peformance of ResNet-50 and MobileNet, especially for latency. test=develop * Optimize key creation of pool fp32 grad. test=develop