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

!android-nn-driver:5966

Change-Id: Ice0b4d2872bb0e09bfc0763034a206c3a8f24af4
Signed-off-by: Rob Hughes <robert.hughes@arm.com>
diff --git a/tests/ImageCSVFileGenerator/ImageCSVFileGenerator.cpp b/tests/ImageCSVFileGenerator/ImageCSVFileGenerator.cpp
index 0138c1c..a949da3 100644
--- a/tests/ImageCSVFileGenerator/ImageCSVFileGenerator.cpp
+++ b/tests/ImageCSVFileGenerator/ImageCSVFileGenerator.cpp
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: MIT
 //
 
-#include <Filesystem.hpp>
+#include <armnnUtils/Filesystem.hpp>
 #include <cxxopts/cxxopts.hpp>
 
 #include <algorithm>