Improve GNA MT sychronization (#2553)

* Sync GNA lib calls to avoid multi threads and plugins crash

* Remove TODO

* Enable sync for GNA1

* Fix GNA1 sync

* Add core_threading_tests to GNA Plugin to address story 31709

* Disable and change test description

inference-engine/tests/functional/inference_engine/core_threading_tests.cpp

@@ -117,7 +117,7 @@ TEST_F(CoreThreadingTests, RegisterPlugins) {
 }
 
 // tested function: GetAvailableDevices, UnregisterPlugin
-// TODO: some plugins initialization (e.g. GNA) failed during such stress-test scenario
+// TODO: some initialization (e.g. thread/dlopen) sporadically fails during such stress-test scenario
 TEST_F(CoreThreadingTests, DISABLED_GetAvailableDevices) {
     InferenceEngine::Core ie;
     runParallel([&] () {

inference-engine/tests/functional/plugin/gna/shared_tests_instances/behavior/core_threading_tests.cpp

@@ -0,0 +1,23 @@
+// Copyright (C) 2020 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+//
+
+#include <behavior/core_threading_tests.hpp>
+
+namespace {
+
+Params params[] = {
+    std::tuple<Device, Config>{ CommonTestUtils::DEVICE_GNA, {{ CONFIG_KEY(PERF_COUNT), CONFIG_VALUE(YES) }}},
+    std::tuple<Device, Config>{ CommonTestUtils::DEVICE_HETERO, {{ "TARGET_FALLBACK", CommonTestUtils::DEVICE_GNA }}},
+    std::tuple<Device, Config>{ CommonTestUtils::DEVICE_MULTI, {{ MULTI_CONFIG_KEY(DEVICE_PRIORITIES), CommonTestUtils::DEVICE_GNA }}},
+};
+
+}  // namespace
+
+INSTANTIATE_TEST_CASE_P(GNA, CoreThreadingTests, testing::ValuesIn(params), CoreThreadingTests::getTestCaseName);
+
+INSTANTIATE_TEST_CASE_P(DISABLED_GNA, CoreThreadingTestsWithIterations,
+    testing::Combine(testing::ValuesIn(params),
+                     testing::Values(2),
+                     testing::Values(2)),
+    CoreThreadingTestsWithIterations::getTestCaseName);