[serialization_lib] Fix Clamp and Pad Attributes

This patch implements following changes to attribute fields:
- PadAttribute: delete padding field, replace pad_const_int
	and pad_const_fp fields by pad_const, a field of
	ubyte array
- ClampAttribute: replace min_int, max_int, min_fp and max_fp
	fields by min_val and max_val, fields of ubyte arrays
- RescaleAttribute: delete multiplier and shift fields

Signed-off-by: Tai Ly <tai.ly@arm.com>
Change-Id: I5b075d29677cffca9ff2292708141d48410e7e72
diff --git a/python/tosa/PadAttribute.py b/python/tosa/PadAttribute.py
index fc843bb..301bf17 100644
--- a/python/tosa/PadAttribute.py
+++ b/python/tosa/PadAttribute.py
@@ -29,101 +29,49 @@
         self._tab = flatbuffers.table.Table(buf, pos)
 
     # PadAttribute
-    def Padding(self, j):
+    def PadConst(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
         if o != 0:
             a = self._tab.Vector(o)
-            return self._tab.Get(flatbuffers.number_types.Int32Flags, a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
-        return 0
-
-    # PadAttribute
-    def PaddingAsNumpy(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
-        if o != 0:
-            return self._tab.GetVectorAsNumpy(flatbuffers.number_types.Int32Flags, o)
-        return 0
-
-    # PadAttribute
-    def PaddingLength(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
-        if o != 0:
-            return self._tab.VectorLen(o)
-        return 0
-
-    # PadAttribute
-    def PaddingIsNone(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
-        return o == 0
-
-    # PadAttribute
-    def PadConstInt(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
-        if o != 0:
-            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
-        return 0
-
-    # PadAttribute
-    def PadConstFp(self, j):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
-        if o != 0:
-            a = self._tab.Vector(o)
             return self._tab.Get(flatbuffers.number_types.Uint8Flags, a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 1))
         return 0
 
     # PadAttribute
-    def PadConstFpAsNumpy(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+    def PadConstAsNumpy(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
         if o != 0:
             return self._tab.GetVectorAsNumpy(flatbuffers.number_types.Uint8Flags, o)
         return 0
 
     # PadAttribute
-    def PadConstFpLength(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+    def PadConstLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
         if o != 0:
             return self._tab.VectorLen(o)
         return 0
 
     # PadAttribute
-    def PadConstFpIsNone(self):
-        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+    def PadConstIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
         return o == 0
 
 def PadAttributeStart(builder):
-    builder.StartObject(3)
+    builder.StartObject(1)
 
 def Start(builder):
     PadAttributeStart(builder)
 
-def PadAttributeAddPadding(builder, padding):
-    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(padding), 0)
+def PadAttributeAddPadConst(builder, padConst):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(padConst), 0)
 
-def AddPadding(builder, padding):
-    PadAttributeAddPadding(builder, padding)
+def AddPadConst(builder, padConst):
+    PadAttributeAddPadConst(builder, padConst)
 
-def PadAttributeStartPaddingVector(builder, numElems):
-    return builder.StartVector(4, numElems, 4)
-
-def StartPaddingVector(builder, numElems: int) -> int:
-    return PadAttributeStartPaddingVector(builder, numElems)
-
-def PadAttributeAddPadConstInt(builder, padConstInt):
-    builder.PrependInt32Slot(1, padConstInt, 0)
-
-def AddPadConstInt(builder, padConstInt):
-    PadAttributeAddPadConstInt(builder, padConstInt)
-
-def PadAttributeAddPadConstFp(builder, padConstFp):
-    builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(padConstFp), 0)
-
-def AddPadConstFp(builder, padConstFp):
-    PadAttributeAddPadConstFp(builder, padConstFp)
-
-def PadAttributeStartPadConstFpVector(builder, numElems):
+def PadAttributeStartPadConstVector(builder, numElems):
     return builder.StartVector(1, numElems, 1)
 
-def StartPadConstFpVector(builder, numElems: int) -> int:
-    return PadAttributeStartPadConstFpVector(builder, numElems)
+def StartPadConstVector(builder, numElems: int) -> int:
+    return PadAttributeStartPadConstVector(builder, numElems)
 
 def PadAttributeEnd(builder):
     return builder.EndObject()