MLBEDSW-2734: TensorFlow 2.3 compatibility

Compiled the new TensorFlow 2.3 schema and added the new Operator
BatchMatMul to tflite_mapping.py.

Signed-off-by: Jacob Bohlin <jacob.bohlin@arm.com>
Change-Id: Ie62517bd56a6497820e4f1ef20326a4fd2ca89b0
diff --git a/ethosu/vela/tflite/BuiltinOptions.py b/ethosu/vela/tflite/BuiltinOptions.py
index babbcb1..6f0aab0 100644
--- a/ethosu/vela/tflite/BuiltinOptions.py
+++ b/ethosu/vela/tflite/BuiltinOptions.py
@@ -104,3 +104,5 @@
     SelectV2Options = 98
     DensifyOptions = 99
     SegmentSumOptions = 100
+    BatchMatMulOptions = 101
+