Include armnn/IRuntime.hpp in TosaCommon OneToManyMappingTests

 * Error thrown when building in CLion

Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>
Change-Id: I533f11e7ce2d883e254472097fee3817584d2f49
diff --git a/src/backends/tosaCommon/test/OneToManyMappingTests.cpp b/src/backends/tosaCommon/test/OneToManyMappingTests.cpp
index dd61ba8..b8d28f0 100644
--- a/src/backends/tosaCommon/test/OneToManyMappingTests.cpp
+++ b/src/backends/tosaCommon/test/OneToManyMappingTests.cpp
@@ -4,6 +4,7 @@
 //
 
 #include "AvgPool2DIgnoreValueChecker.hpp"
+#include <armnn/IRuntime.hpp>
 
 using namespace armnn;
 using namespace tosa;