Fix incorrect merge of maxpool2d

Signed-off-by: Erik Lundell <[email protected]>
Change-Id: If415a5ee3185c3401069652906a0633491bca1b0

Author: Erik-Lundell

backends/arm/operators/op_max_pool2d.py

@@ -57,7 +57,7 @@ def define_node(
         output_zp = 0
 
         if is_quant_node:
-            input_zp = get_quant_arg_upstream(torch.fx.Node, node.all_input_nodes[0]).zp
+            input_zp = get_quant_arg_upstream(node.all_input_nodes[0]).zp
             output_zp = get_quant_arg_downstream(list(node.users)[0]).zp
 
         attr = ts.TosaSerializerAttribute()