MLBEDSW-4854: Update to TensorFlow 2.5

This commit updates the flatbuffers generated code
to comply with TensorFlow 2.5, as well as stripping
away some legacy code.

Signed-off-by: Dwight Lidman <dwight.lidman@arm.com>
Change-Id: I01fe47ec2bde6e78fdde21ee1bc0a71f560c53ae
diff --git a/ethosu/vela/tflite/ConcatEmbeddingsOptions.py b/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
index 9d26c51..b8d5538 100644
--- a/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
+++ b/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ConcatEmbeddingsOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ConcatEmbeddingsOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -48,6 +52,11 @@
         return 0
 
     # ConcatEmbeddingsOptions
+    def NumColumnsPerChannelIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # ConcatEmbeddingsOptions
     def EmbeddingDimPerChannel(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -69,6 +78,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # ConcatEmbeddingsOptions
+    def EmbeddingDimPerChannelIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
 def ConcatEmbeddingsOptionsStart(builder): builder.StartObject(3)
 def ConcatEmbeddingsOptionsAddNumChannels(builder, numChannels): builder.PrependInt32Slot(0, numChannels, 0)
 def ConcatEmbeddingsOptionsAddNumColumnsPerChannel(builder, numColumnsPerChannel): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(numColumnsPerChannel), 0)