[libclc] [llvm] [CI][libclc] Enable libclc in premerge CI with single target (PR #186104)

[Wenju He via cfe-commits]

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@@ -248,6 +248,7 @@ def test_exclude_libcxx_in_projects(self):
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+        self.assertEqual(env_variables["libclc_targets"], "amdgcn-amd-amdhsa-llvm")
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wenju-he wrote:

done

https://github.com/llvm/llvm-project/pull/186104