MLCE-754 'Improve operator support error/warning from Arm NN Delegate'

* Improved error reporting on armnn_delegate

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I1bd131fb56d64b32b1fafad0465256178720226c
diff --git a/delegate/src/Normalization.hpp b/delegate/src/Normalization.hpp
index 68ff3af..fa1c547 100644
--- a/delegate/src/Normalization.hpp
+++ b/delegate/src/Normalization.hpp
@@ -44,7 +44,7 @@
     bool isSupported = false;
     auto validateFunc = [&](const armnn::TensorInfo& outInfo, bool& isSupported)
     {
-        FORWARD_LAYER_SUPPORT_FUNC(__func__,
+        FORWARD_LAYER_SUPPORT_FUNC("L2_NORMALIZATION",
                                    tfLiteContext,
                                    IsL2NormalizationSupported,
                                    delegateData.m_Backends,
@@ -114,7 +114,7 @@
     bool isSupported = false;
     auto validateFunc = [&](const armnn::TensorInfo& outInfo, bool& isSupported)
     {
-        FORWARD_LAYER_SUPPORT_FUNC(__func__,
+        FORWARD_LAYER_SUPPORT_FUNC("NORMALIZATION",
                                    tfLiteContext,
                                    IsNormalizationSupported,
                                    delegateData.m_Backends,