ppc is still failing:

https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20ppc64%20-%20sim/builds/10180

TBR=yangguo@chromium.org

No-Try: true
No-Presubmit: true
Bug: v8:6666, v8:7571
Change-Id: I99ddc97543b374014587970310ac5172ed514892
Reviewed-on: https://chromium-review.googlesource.com/973005
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52100}