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/RNNOptions.py b/ethosu/vela/tflite/RNNOptions.py
index 3cfdb6a..397d716 100644
--- a/ethosu/vela/tflite/RNNOptions.py
+++ b/ethosu/vela/tflite/RNNOptions.py
@@ -25,6 +25,14 @@
             return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
         return 0
 
-def RNNOptionsStart(builder): builder.StartObject(1)
+    # RNNOptions
+    def AsymmetricQuantizeInputs(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+def RNNOptionsStart(builder): builder.StartObject(2)
 def RNNOptionsAddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(0, fusedActivationFunction, 0)
+def RNNOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(1, asymmetricQuantizeInputs, 0)
 def RNNOptionsEnd(builder): return builder.EndObject()