V8 Buildbot: Fix build config of 32 bits layout tester.
V8 Buildbot: Fix build config of 32 bits layout tester.

BUG=

Review URL: https://codereview.chromium.org/384713002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@282320 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build