added tests to check nvcc runtime api output

Change-Id: Ifdd39b5d0a6a58d20a8e9745e59dd82d50a90e2f

tests/src/nvcc/Device/hipGetDeviceCount.cpp

@@ -0,0 +1,7 @@
+#include <hip/hip_runtime_api.h>
+#include "test_common.h"
+
+int main()
+{
+    HIP_PRINT_STATUS(hipGetDeviceCount(NULL));
+}