loongson/mirror: links for mcp2serial

loongson/mirror mcp2serial-0.1.3.tar.gz
loongson/mirror mcp2serial-0.1.3-py3-none-any.whl
loongson/mirror mcp2serial-0.1.2.tar.gz
loongson/mirror mcp2serial-0.1.2-py3-none-any.whl