PPC: [inspector] mark test as slow when running on simulator

Change-Id: Idae6adfd81889da96e7f9dad8781c9a285bea72a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2601343Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71883}

test/inspector/inspector.status

@@ -80,6 +80,7 @@
 ['(arch == ppc64) and simulator_run', {
   # Slow test: https://crbug.com/v8/10965
   'runtime/console-messages-limits': [PASS, SLOW],
+  'debugger/regress-1125934': [PASS, SLOW],
 }],  # (arch == ppc64) and simulator_run
 
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