Feat:[riscv] Add rvv support to cpu/kernels.cc #3166

Job	Run time
build-and-test-cpp-aarch64 (openblas)	4m 31s
build-and-test-cpp-x86_64 (ubuntu-22.04, mkl)	5m 55s
build-and-test-cpp-x86_64 (ubuntu-22.04, dnnl)	5m 31s
build-python-wheels (ubuntu-22.04, auto64)	1m 0s
build-python-wheels (macos-13, arm64)	1m 16s
build-python-wheels (windows-2019, auto64)	1s
check-python-style	14s
build-python-wheels (ubuntu-22.04, aarch64)	1m 13s
build-and-push-docker-images	26m 18s
build-python-wheels (macos-13, x86_64)	1m 15s
build-and-deploy-docs	0s
test-python-wheels	0s
publish-python-wheels-on-pypi	0s
	47m 14s

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