IVGCVSW-2947 Remove boost dependency from include/TypesUtils.hpp

!armnn:962

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Ia70c4b8397e5d6422d1947fca8c8db29a423822e
diff --git a/ConversionUtils.hpp b/ConversionUtils.hpp
index de4516c..74e26f2 100644
--- a/ConversionUtils.hpp
+++ b/ConversionUtils.hpp
@@ -16,6 +16,7 @@
 
 #include <boost/assert.hpp>
 #include <boost/core/ignore_unused.hpp>
+#include <boost/numeric/conversion/cast.hpp>
 #include <boost/test/tools/floating_point_comparison.hpp>
 
 #include <log/log.h>