loongson/pypi: links for bpusdk

loongson/mirror bpusdk-4.2-py3-none-any.whl
loongson/mirror bpusdk-4.1-py3-none-any.whl
loongson/mirror bpusdk-4.0-py3-none-any.whl
loongson/mirror bpusdk-3.0-py3-none-any.whl