Fix timout of packed-elements.js on ARM

test/mjsunit/packed-elements.js

Index: test/mjsunit/packed-elements.js
diff --git a/test/mjsunit/packed-elements.js b/test/mjsunit/packed-elements.js
index 7f333e56e5d273c80369961cb9fe5f205bb520e3..cfcdf8031fbbac3e79c6954bc412961ac2b13456 100644
--- a/test/mjsunit/packed-elements.js
+++ b/test/mjsunit/packed-elements.js
@@ -96,9 +96,9 @@ function test6() {
 function test_with_optimization(f) {
   // Run tests in a loop to make sure that inlined Array() constructor runs out
   // of new space memory and must fall back on runtime impl.
-  for (i = 0; i < 250000; ++i) f();
+  for (i = 0; i < 25000; ++i) f();
   %OptimizeFunctionOnNextCall(f);
-  for (i = 0; i < 250000; ++i) f(); // Make sure GC happens
+  for (i = 0; i < 25000; ++i) f(); // Make sure GC happens
 }
 
 if (has_packed_elements) {