loongson/pypi: links for ssc-32u

loongson/mirror ssc_32u-0.2.3.tar.gz
loongson/mirror ssc_32u-0.2.2.tar.gz
loongson/mirror ssc_32u-0.2.1.tar.gz
loongson/mirror ssc_32u-0.2.tar.gz
loongson/mirror ssc_32u-0.1.tar.gz