[arm] Disable one more tests on native hardware

The test was recently enabled (together with other simulator tests) to
also run on native hardware (in https://crrev.com/c/727880).
Temporarlily disable this one test again until the issue is fixed.

R=ahaas@chromium.org

Bug: v8:6963
Change-Id: Ib6bae773a1d54541c87c37fb8547413ee7deac58
Reviewed-on: https://chromium-review.googlesource.com/728021Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48739}

test/cctest/test-simulator-arm.cc

@@ -370,6 +370,10 @@ class MemoryAccessThread : public v8::base::Thread {
   v8::Isolate* isolate_;
 };
 
+// TODO(rodolph.perfetta@arm.com): Enable this test for native hardware, see
+// http://crbug.com/v8/6963.
+#if defined(USE_SIMULATOR)
+
 TEST(simulator_invalidate_exclusive_access_threaded) {
   using Kind = MemoryAccess::Kind;
   using Size = MemoryAccess::Size;
@@ -418,6 +422,8 @@ TEST(simulator_invalidate_exclusive_access_threaded) {
   thread.Join();
 }
 
+#endif  // USE_SIMULATOR
+
 TEST(simulator_vabs_32) {
   Isolate* isolate = CcTest::i_isolate();
   HandleScope scope(isolate);