[clang] [NFC] [Build Fix] Fix failing test case due to missing host arch. (PR #166392)

[Joseph Huber via cfe-commits]

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@@ -2,7 +2,7 @@
 // The input and output files cannot be the same.
 
 // RUN: %clang --offload-new-driver -### -save-temps -nogpuinc -nogpulib \
-// RUN: --offload-arch=amdgcnspirv -x hip %s 2>&1 \
+// RUN: --target=x86_64-linux-gnu --offload-arch=amdgcnspirv -x hip %s 2>&1 \
----------------
jhuber6 wrote:

```suggestion
// RUN: --target=x86_64-unknown-linux-gnu --offload-arch=amdgcnspirv -x hip %s 2>&1 \
```

https://github.com/llvm/llvm-project/pull/166392