IVGCVSW-3739 Add serialization support for Abs

Signed-off-by: FinnWilliamsArm <Finn.Williams@arm.com>
Change-Id: I42c348515f3f93efc2e0570bbebdc77306f12468
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 217c420..7fd05eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -695,6 +695,7 @@
         list(APPEND unittest_sources
             src/armnnSerializer/test/ActivationSerializationTests.cpp
             src/armnnSerializer/test/SerializerTests.cpp
+            src/armnnDeserializer/test/DeserializeAbs.cpp
             src/armnnDeserializer/test/DeserializeActivation.cpp
             src/armnnDeserializer/test/DeserializeAdd.cpp
             src/armnnDeserializer/test/DeserializeBatchToSpaceNd.cpp