freedreno/ci: enable a630-gles-asan for merge
What does this MR do and why?
freedreno/ci: enable a630-gles-asan for merge
Currently a630-gles-asan is not appearing in merge pipelines because the
rules in `.freedreno-common-rules:` are being inadvertently overridden by
`.common-rules`. due to the order of its inherited jobs.
Reorder its inherited jobs so that the job with the most specific rules
appears last. This re-enables a630-gles-asan for merge pipelines.