[clang] [clang][LoongArch] Add OHOS target (PR #127555)

[via cfe-commits]

================
@@ -111,6 +111,8 @@ std::string OHOS::getMultiarchTriple(const llvm::Triple &T) const {
     return "x86_64-linux-ohos";
   case llvm::Triple::aarch64:
     return "aarch64-linux-ohos";
+  case llvm::Triple::loongarch64:
----------------
Ami-zhang wrote:

Yeah.
Just on loongarch64.

https://github.com/llvm/llvm-project/pull/127555