[llvm] [AMDGPU][test]added unique and sort options for update_mc_test_check script (PR #111769)

[Brox Chen via llvm-commits]

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@@ -6,6 +6,7 @@
 from __future__ import print_function
 
 import argparse
+import functools
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broxigarchen wrote:

I'll remove this in another patch

https://github.com/llvm/llvm-project/pull/111769