Change to flatbuffers 1.12 as the submodule

The code should be compatible with both flatbuffers 2.0 and 1.12
through try/except blocks.

Generally other projects seem to still be using 1.12, so move the
submodule back to 1.12 for maximum compatibility.

Change-Id: I9733c7df0a7e4226f87473e19e48d3a80a3db6c6
Signed-off-by: Eric Kunze <eric.kunze@arm.com>
diff --git a/python/tosa/TransposeConvAttribute.py b/python/tosa/TransposeConvAttribute.py
index b06e534..f8970b3 100644
--- a/python/tosa/TransposeConvAttribute.py
+++ b/python/tosa/TransposeConvAttribute.py
@@ -10,17 +10,13 @@
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsTransposeConvAttribute(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = TransposeConvAttribute()
         x.Init(buf, n + offset)
         return x
 
     @classmethod
-    def GetRootAsTransposeConvAttribute(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
     def TransposeConvAttributeBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
         return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x4F\x53\x41", size_prefixed=size_prefixed)
 
@@ -136,43 +132,13 @@
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
         return o == 0
 
-def Start(builder): builder.StartObject(4)
-def TransposeConvAttributeStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddOutpad(builder, outpad): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(outpad), 0)
-def TransposeConvAttributeAddOutpad(builder, outpad):
-    """This method is deprecated. Please switch to AddOutpad."""
-    return AddOutpad(builder, outpad)
-def StartOutpadVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def TransposeConvAttributeStartOutpadVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartOutpadVector(builder, numElems)
-def AddStride(builder, stride): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(stride), 0)
-def TransposeConvAttributeAddStride(builder, stride):
-    """This method is deprecated. Please switch to AddStride."""
-    return AddStride(builder, stride)
-def StartStrideVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def TransposeConvAttributeStartStrideVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartStrideVector(builder, numElems)
-def AddDilation(builder, dilation): builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(dilation), 0)
-def TransposeConvAttributeAddDilation(builder, dilation):
-    """This method is deprecated. Please switch to AddDilation."""
-    return AddDilation(builder, dilation)
-def StartDilationVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def TransposeConvAttributeStartDilationVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartDilationVector(builder, numElems)
-def AddOutputShape(builder, outputShape): builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(outputShape), 0)
-def TransposeConvAttributeAddOutputShape(builder, outputShape):
-    """This method is deprecated. Please switch to AddOutputShape."""
-    return AddOutputShape(builder, outputShape)
-def StartOutputShapeVector(builder, numElems): return builder.StartVector(4, numElems, 4)
-def TransposeConvAttributeStartOutputShapeVector(builder, numElems):
-    """This method is deprecated. Please switch to Start."""
-    return StartOutputShapeVector(builder, numElems)
-def End(builder): return builder.EndObject()
-def TransposeConvAttributeEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def TransposeConvAttributeStart(builder): builder.StartObject(4)
+def TransposeConvAttributeAddOutpad(builder, outpad): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(outpad), 0)
+def TransposeConvAttributeStartOutpadVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def TransposeConvAttributeAddStride(builder, stride): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(stride), 0)
+def TransposeConvAttributeStartStrideVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def TransposeConvAttributeAddDilation(builder, dilation): builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(dilation), 0)
+def TransposeConvAttributeStartDilationVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def TransposeConvAttributeAddOutputShape(builder, outputShape): builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(outputShape), 0)
+def TransposeConvAttributeStartOutputShapeVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+def TransposeConvAttributeEnd(builder): return builder.EndObject()