Merge pull request #2045 from loongarch-rs/loongarch64

Add support for LoongArch

Author: asomers

src/sys/ioctl/linux.rs

@@ -42,7 +42,8 @@ mod consts {
     target_arch = "x86_64",
     target_arch = "aarch64",
     target_arch = "riscv32",
-    target_arch = "riscv64"
+    target_arch = "riscv64",
+    target_arch = "loongarch64"
 ))]
 mod consts {
     #[doc(hidden)]