NNXSW-3081 Move Filesystem.hpp and Threads.hpp to public include

!armnn:5954

Change-Id: Ic2904a0ccbcf24b30041a55d9c369c2424da1624
Signed-off-by: Rob Hughes <robert.hughes@arm.com>
diff --git a/Utils.cpp b/Utils.cpp
index 60e7a80..dcee44a 100644
--- a/Utils.cpp
+++ b/Utils.cpp
@@ -9,11 +9,11 @@
 #include "Half.hpp"
 
 #include <armnnSerializer/ISerializer.hpp>
+#include <armnnUtils/Filesystem.hpp>
 #include <armnnUtils/Permute.hpp>
 
 #include <armnn/Utils.hpp>
 #include <armnn/utility/Assert.hpp>
-#include <Filesystem.hpp>
 #include <log/log.h>
 
 #include <cassert>
diff --git a/test/UtilsTests.cpp b/test/UtilsTests.cpp
index c9f6aad..fcb0c4f 100644
--- a/test/UtilsTests.cpp
+++ b/test/UtilsTests.cpp
@@ -15,7 +15,7 @@
 #include <armnn/INetwork.hpp>
 #include "armnn/NetworkFwd.hpp"
 
-#include <Filesystem.hpp>
+#include <armnnUtils/Filesystem.hpp>
 
 #include <doctest/doctest.h>