Bugfix: Correctly parse the armnn_includes by separating with space

 * Stops generate_wrap reading as -I/usr/local/include-I/usr/include
 * Allows generation using system headers

Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
Change-Id: I501c473b0f624f80ebccfade7b009a74bdcb2d0c
diff --git a/python/pyarmnn/swig_generate.py b/python/pyarmnn/swig_generate.py
index d3488b7..7a59eda 100755
--- a/python/pyarmnn/swig_generate.py
+++ b/python/pyarmnn/swig_generate.py
@@ -113,4 +113,4 @@
         'armnn_tfliteparser']
 
     for n in wrap_names:
-        generate_wrap(n, f"-I{'-I'.join(armnn_includes)} ")
+        generate_wrap(n, f"-I{' -I'.join(armnn_includes)} ")