IVGCVSW-3119 Rename MergerLayer to ConcatLayer

!android-nn-driver:1210

Change-Id: I940b3b9e421c92bfd55ae996f7bc54ac077f2604
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/Android.mk b/Android.mk
index d57e486..f791c1a 100644
--- a/Android.mk
+++ b/Android.mk
@@ -91,6 +91,7 @@
         src/armnn/layers/AdditionLayer.cpp \
         src/armnn/layers/BatchNormalizationLayer.cpp \
         src/armnn/layers/BatchToSpaceNdLayer.cpp \
+        src/armnn/layers/ConcatLayer.cpp \
         src/armnn/layers/ConstantLayer.cpp \
         src/armnn/layers/Convolution2dLayer.cpp \
         src/armnn/layers/ConvertFp16ToFp32Layer.cpp \
@@ -114,7 +115,6 @@
         src/armnn/layers/MeanLayer.cpp \
         src/armnn/layers/MemCopyLayer.cpp \
         src/armnn/layers/MergeLayer.cpp \
-        src/armnn/layers/MergerLayer.cpp \
         src/armnn/layers/MinimumLayer.cpp \
         src/armnn/layers/MultiplicationLayer.cpp \
         src/armnn/layers/NormalizationLayer.cpp \