MLBEDSW-6425: Update to TensorFlow 2.8

Update the flatbuffers generated code to comply with TensorFlow 2.8

Signed-off-by: Rickard Bolin <rickard.bolin@arm.com>
Change-Id: Ia65325b88745e49dbafa803a38c0ea0e7d0478ba
diff --git a/ethosu/vela/tflite/CombinerType.py b/ethosu/vela/tflite/CombinerType.py
index 1e3a61f..17d9151 100644
--- a/ethosu/vela/tflite/CombinerType.py
+++ b/ethosu/vela/tflite/CombinerType.py
@@ -6,3 +6,4 @@
     SUM = 0
     MEAN = 1
     SQRTN = 2
+