ARM: Fix the debugger using wrong break stub for slot breaks

Porting r7203 to 2.4 branch.
Review URL: http://codereview.chromium.org/6667075

git-svn-id: http://v8.googlecode.com/svn/branches/2.4@7233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2 files changed