IVGCVSW-IVGCVSW-4772 Fixes for android-nn-driver unit tests on Android R

 * Added missing operand parameter numberOfConsumers to DriverTestHelpers
 * Added nullptr checks to unit tests
 * Disabling QuantizedLstmTest when ARMCOMPUTECL_ENABLED is undefined

Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: I46dc413d3bb1805eb0e7c982177b6d60d0b297f5
diff --git a/test/Concat.cpp b/test/Concat.cpp
index b99e31c..b4b650f 100644
--- a/test/Concat.cpp
+++ b/test/Concat.cpp
@@ -128,6 +128,7 @@
     float* outdata = static_cast<float*>(static_cast<void*>(outMemory->getPointer()));
 
     // run the execution
+    ARMNN_ASSERT(preparedModel.get() != nullptr);
     auto execStatus = Execute(preparedModel, request, expectedExecStatus);
     BOOST_TEST(execStatus == expectedExecStatus);