IVGCVSW-4549 Add front end for new QLSTM layer

* Added new layer QLstm (Android R HAL 1.3)
* Made necessary updates to APIs
* Added unit tests
* This layer is functionally equivalent to the
  original unquantized LSTM layer with some
  additonal quantization features added. Due
  to this, original LstmParams are used for
  this layer.

Signed-off-by: James Conroy <james.conroy@arm.com>
Change-Id: I5b7f2d2fb6e17e81573b41a31bc55f49ae79608f
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 034f346..e13b132 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -338,6 +338,8 @@
     src/armnn/layers/Pooling2dLayer.cpp
     src/armnn/layers/QuantizeLayer.cpp
     src/armnn/layers/QuantizeLayer.hpp
+    src/armnn/layers/QLstmLayer.hpp
+    src/armnn/layers/QLstmLayer.cpp
     src/armnn/layers/QuantizedLstmLayer.hpp
     src/armnn/layers/QuantizedLstmLayer.cpp
     src/armnn/layers/DivisionLayer.cpp