IVGCVSW-8055 Add support for GELU activation function.

* Add support to CpuRef, CpuAcc and GpuAcc
* Add support to tflite parser, classic and opaque tflite delegates
* Add support to serializer and deserializer
* Add Unit tests

Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ibc60ef2ef2a051e6d9af6e15d24c46316ec19de4
diff --git a/src/backends/neon/test/NeonLayerTests.cpp b/src/backends/neon/test/NeonLayerTests.cpp
index 658d718..a938ceb 100644
--- a/src/backends/neon/test/NeonLayerTests.cpp
+++ b/src/backends/neon/test/NeonLayerTests.cpp
@@ -722,6 +722,9 @@
 // Elu Activation
 ARMNN_AUTO_TEST_CASE_WITH_THF(Elu, EluTest)
 
+// Gelu Activation
+ARMNN_AUTO_TEST_CASE_WITH_THF(Gelu, GeluTest)
+
 // Softmax
 // Moved to NeonLayerTests_NDK_Bug.cpp
 //ARMNN_AUTO_TEST_CASE_WITH_THF(SimpleSoftmaxBeta1, SimpleSoftmaxTest, 1.0f)