Add ELF e_machine ID [1] and relocations types [2] for LoongArch to the current in-repo definitions. [1] https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_e_machine_identifies_the_machine [2] https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_relocations Signed-off-by: Zhou Yang <zhouyang@loongson.cn> Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>