ci: Mark the rest of compswap as flaky on freedreno.

Emma Anholt requested to merge anholt/mesa:ci-fd-compswap-flakes into master

We got another flake, this time on dEQP-GLES31.functional.compute.shared_var.atomic.compswap.highp_uint, which blocked !4162 (merged) from merging. Mark the rest flaky so we don't have to keep firefighting one test at a time.

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