Fix deopt fuzzer variable set up.

tools/testrunner/local/utils.py

Index: tools/testrunner/local/utils.py
diff --git a/tools/testrunner/local/utils.py b/tools/testrunner/local/utils.py
index 61ee7dac67bed1f6699b5757ceeb0eab4d8ee12a..508709f87d2d108a4f8901b337a1ebf25197e042 100644
--- a/tools/testrunner/local/utils.py
+++ b/tools/testrunner/local/utils.py
@@ -78,6 +78,13 @@ def GuessOS():
     return None
 
 
+def UseSimulator(arch):
+  machine = platform.machine()
+  return (machine and
+      (arch == "mipsel" or arch == "arm") and
+      not arch.startswith(machine))
+
+
 # This will default to building the 32 bit VM even on machines that are
 # capable of running the 64 bit VM.
 def DefaultArch():