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/DimensionType.py b/ethosu/vela/tflite/DimensionType.py
index 310d8ee..a27d016 100644
--- a/ethosu/vela/tflite/DimensionType.py
+++ b/ethosu/vela/tflite/DimensionType.py
@@ -5,3 +5,4 @@
 class DimensionType(object):
     DENSE = 0
     SPARSE_CSR = 1
+