loongson/mirror: links for awrs

loongson/mirror AWRS-2019.8.14.1152.tar.gz
loongson/mirror AWRS-2019.8.9.1757.tar.gz
loongson/mirror AWRS-2017.9.29.1327.tar.gz
loongson/mirror AWRS-2017.9.26.1637.tar.gz
loongson/mirror AWRS-2017.6.9.1600.tar.gz
loongson/mirror AWRS-2017.6.9.1547.tar.gz