loongson/pypi: links for cross-sysroot

loongson/mirror cross-sysroot-0.4.tar.gz
loongson/mirror cross_sysroot-0.4-py3-none-any.whl
loongson/mirror cross-sysroot-0.3.tar.gz
loongson/mirror cross_sysroot-0.3-py3-none-any.whl
loongson/mirror cross-sysroot-0.2.tar.gz
loongson/mirror cross-sysroot-0.1.3.tar.gz
loongson/mirror cross-sysroot-0.1.2.tar.gz
loongson/mirror cross-sysroot-0.1.1.tar.gz
loongson/mirror cross-sysroot-0.1.tar.gz