SWDEV-318349 - Enable test of graph launched by peer (#2997)

- Enable Unit_hipGraphInstantiateWithFlags_DependencyGraph for AMD.
- Add stream sync for null stream.
- Fix Unit_hipGraphInstantiateWithFlags_DependencyGraph.

change-Id: I5774563fdfed1afd29a43927f3630adbfb75c48a

[ROCm/hip-tests commit: 5db81793b2]

projects/hip-tests/catch/unit/graph/hipGraphInstantiateWithFlags.cc

@@ -157,6 +157,7 @@ void GraphInstantiateWithFlags_DependencyGraph(bool ctxt_change = false) {
   // Instantiate and launch the cloned graph
   HIP_CHECK(hipGraphInstantiateWithFlags(&graphExec, graph, 0));
   HIP_CHECK(hipGraphLaunch(graphExec, 0));
+  HIP_CHECK(hipStreamSynchronize(0));
 
   // Verify graph execution result
   HipTest::checkVectorADD(A_h, B_h, C_h, N);
@@ -245,20 +246,9 @@ by creating dependency graph and instantiate, launching and verifying
 the result
 */
 TEST_CASE("Unit_hipGraphInstantiateWithFlags_DependencyGraph") {
-  int numDevices = 0;
-  int canAccessPeer = 0;
-  HIP_CHECK(hipGetDeviceCount(&numDevices));
-  if (numDevices > 1) {
-    HIP_CHECK(hipDeviceCanAccessPeer(&canAccessPeer, 0, 1));
-    if (canAccessPeer) {
-      GraphInstantiateWithFlags_DependencyGraph();
-    } else {
-      SUCCEED("Machine does not seem to have P2P");
-    }
-  } else {
-    SUCCEED("skipped the testcase as no of devices is less than 2");
-  }
+  GraphInstantiateWithFlags_DependencyGraph();
 }
+
 /*
 This testcase verifies hipGraphInstantiateWithFlags API
 by creating dependency graph on GPU-0 and instantiate, launching and verifying
@@ -279,6 +269,7 @@ TEST_CASE("Unit_hipGraphInstantiateWithFlags_DependencyGraphDeviceCtxtChg") {
     SUCCEED("skipped the testcase as no of devices is less than 2");
   }
 }
+
 /*
 This testcase verifies hipGraphInstantiateWithFlags API
 by creating capture graph and instantiate, launching and verifying