MIPS: Fix test-cpu-profiler/SampleWhenFrameIsNotSetup flakiness on MIPS simulator.

BUG=v8:2628

TEST=cctest/test-cpu-profiler/SampleWhenFrameIsNotSetup
R=jkummerow@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/17265004

Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00