loongson/mirror: links for mtgsdk

loongson/mirror mtgsdk-1.3.1.tar.gz
loongson/mirror mtgsdk-1.3.0.tar.gz
loongson/mirror mtgsdk-1.2.0.tar.gz
loongson/mirror mtgsdk-1.1.0.tar.gz
loongson/mirror mtgsdk-1.0.0.tar.gz