loongson/mirror: links for chickens

loongson/mirror chickens-1.8.6.tar.gz
loongson/mirror chickens-1.8.5.tar.gz
loongson/mirror chickens-1.8.4.tar.gz
loongson/mirror chickens-1.8.3.tar.gz
loongson/mirror chickens-1.8.2.tar.gz