loongson/pypi: links for pcal9535a

loongson/mirror pcal9535a-0.7.tar.gz
loongson/mirror pcal9535a-0.6.tar.gz
loongson/mirror pcal9535a-0.5.tar.gz
loongson/mirror pcal9535a-0.4.tar.gz
loongson/mirror pcal9535a-0.3.tar.gz
loongson/mirror pcal9535a-0.2.tar.gz
loongson/mirror pcal9535a-0.1.tar.gz