IVGCVSW-7273 Fix TOSA Serialization Library integration

 * half.hpp is now required as an include for numpy_utils.h
 * DType_FLOAT was changed to DType_FP32.
 * DType_FP16 support has been added to ArmNNToDType utility function.

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Ib25be9a5abfbd9db2a90b3e42d592259a6df0e01
diff --git a/src/backends/tosaReference/CMakeLists.txt b/src/backends/tosaReference/CMakeLists.txt
index fdec6d1..c7de117 100644
--- a/src/backends/tosaReference/CMakeLists.txt
+++ b/src/backends/tosaReference/CMakeLists.txt
@@ -4,6 +4,7 @@
 #
 
 include_directories(SYSTEM ${FLATBUFFERS_INCLUDE_PATH})
+include_directories(SYSTEM ${PROJECT_SOURCE_DIR}/third-party/half)
 include_directories(SYSTEM ${TOSA_SERIALIZATION_LIB_INCLUDE})
 include_directories(SYSTEM ${TOSA_REFERENCE_MODEL_INCLUDE})