IVGCVSW-2697 Add Serialize/Deserialize for the Merger Layer

* Force generation of schema header in every build
* Also fixed typo in OriginsDescriptor comment (Descriptors.hpp)
* Added Serialize/Deserialize check on Addition Layer
* Added Serialize/Deserialize check on Floor Layer
* Added Serialize/Deserialize check on Minimum Layer
* Added Serialize/Deserialize check on Maximum Layer
* Added Serialize/Deserialize check on Multiplication Layer
* Added Serialize/Deserialize check on Division Layer

Change-Id: I1358ea4db7ca506d8bcec2ee64e1fbad6005e723
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/src/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index 01142ff..a5fb4b6 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -110,7 +110,8 @@
     Subtraction = 26,
     StridedSlice = 27,
     Gather = 28,
-    Mean = 29
+    Mean = 29,
+    Merger = 30
 }
 
 // Base layer table to be used as part of other layers
@@ -415,6 +416,22 @@
     dataLayout:DataLayout;
 }
 
+table MergerLayer {
+    base:LayerBase;
+    descriptor:OriginsDescriptor;
+}
+
+table UintVector {
+   data:[uint];
+}
+
+table OriginsDescriptor {
+   concatAxis:uint;
+   numViews:uint;
+   numDimensions:uint;
+   viewOrigins:[UintVector];
+}
+
 union Layer {
     ActivationLayer,
     AdditionLayer,
@@ -445,7 +462,8 @@
     SubtractionLayer,
     StridedSliceLayer,
     GatherLayer,
-    MeanLayer
+    MeanLayer,
+    MergerLayer
 }
 
 table AnyLayer {