IVGCVSW-5685 Add CpuAcc specific configuration option numberOfThreads

 * Added --number-of-threads command line option to android-nn-driver

!armnn:5068

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: I248326bf3c0355a7a17b70cb1aac7b7976820c12
diff --git a/DriverOptions.hpp b/DriverOptions.hpp
index f3b441c..bab611a 100644
--- a/DriverOptions.hpp
+++ b/DriverOptions.hpp
@@ -38,6 +38,7 @@
     int GetExitCode() const { return m_ExitCode; }
     const std::string& GetCachedNetworkFilePath() const { return m_CachedNetworkFilePath; }
     bool SaveCachedNetwork() const { return m_SaveCachedNetwork; }
+    unsigned int GetNumberOfThreads() const { return m_NumberOfThreads; }
 
 private:
     std::vector<armnn::BackendId> m_Backends;
@@ -55,6 +56,7 @@
     int m_ExitCode;
     std::string m_CachedNetworkFilePath;
     bool m_SaveCachedNetwork;
+    unsigned int m_NumberOfThreads;
 };
 
 } // namespace armnn_driver