Add missing extra include path to fuzzer programs

The fuzzer needs both kinds of test helper so needs to include things
from both new and old locations.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/programs/fuzz/CMakeLists.txt b/programs/fuzz/CMakeLists.txt
index 7392047..9953dce 100644
--- a/programs/fuzz/CMakeLists.txt
+++ b/programs/fuzz/CMakeLists.txt
@@ -40,7 +40,8 @@
     endif()
 
     add_executable(${exe} ${exe_sources})
-    target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../framework/tests/include)
+    target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../framework/tests/include
+                                              ${CMAKE_CURRENT_SOURCE_DIR}/../../tests/include)
 
     if (NOT FUZZINGENGINE_LIB)
         target_link_libraries(${exe} ${libs})