IVGCVSW-2914 Add Switch Layer and no-op factory method

Change-Id: I6a6ece708a49e8a97c83a3e7fec11c88af1e1cfa
Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
diff --git a/src/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index 8b275b6..e8d72fc 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -119,7 +119,8 @@
     Lstm = 34,
     Quantize = 35,
     Dequantize = 36,
-    Merge = 37
+    Merge = 37,
+    Switch = 38
 }
 
 // Base layer table to be used as part of other layers
@@ -529,6 +530,10 @@
     base:LayerBase;
 }
 
+table SwitchLayer {
+    base:LayerBase;
+}
+
 union Layer {
     ActivationLayer,
     AdditionLayer,
@@ -567,7 +572,8 @@
     LstmLayer,
     QuantizeLayer,
     DequantizeLayer,
-    MergeLayer
+    MergeLayer,
+    SwitchLayer
 }
 
 table AnyLayer {