prevent pointwise override for DA strategy

Author: calad0i

hls4ml/backends/vivado/passes/pointwise.py

@@ -65,6 +65,8 @@ def register_pointwise(backend):
 
 class OptimizePointwiseConv(OptimizerPass):
     def match(self, node):
+        if node.get_attr('strategy') == 'distributed_arithmetic':
+            return False
         return (
             node.class_name in ('Conv1D', 'Conv2D')
             and node.get_attr('filt_height', 1) == 1