loongson/pypi: links for ovs-p4

loongson/mirror ovs-p4-0.0.6.tar.gz
loongson/mirror ovs-p4-0.0.5.tar.gz
loongson/mirror ovs-p4-0.0.3.tar.gz
loongson/mirror ovs-p4-0.0.2.tar.gz
loongson/mirror ovs-p4-0.0.1.tar.gz