IVGCVSW-2915 Add Merge Layer and no-op factory method

Change-Id: I54549671e0d3b207904cf9796a843eb2b0a631f7
Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>
diff --git a/Android.mk b/Android.mk
index 85bd214..6d5a0fa 100644
--- a/Android.mk
+++ b/Android.mk
@@ -108,6 +108,7 @@
         src/armnn/layers/MaximumLayer.cpp \
         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 \