[POT] Update patterns (#9786)

* Update special_patterns.py

* add pattern in docs

tools/pot/openvino/tools/pot/configs/hardware/IgnoredPatterns.md

@@ -347,6 +347,18 @@ graph TB
 
 ---
 
+**Name:** softmax<br/>
+**Pattern:** <br/>
+
+```mermaid
+graph TB
+    exp(Exp) --> reduce(ReduceSum)
+    exp(Exp) --> divide(Divide)
+    reduce_const(Const) --> reduce(ReduceSum)
+    reduce(ReduceSum) --> divide(Divide)
+```
+---
+
 **Name:** softmax_reshape_matmul<br/>
 **Pattern:** <br/>
 

tools/pot/openvino/tools/pot/graph/special_patterns.py

@@ -144,6 +144,15 @@ def create_softmax_pattern():
     return pattern.set_name('softmax').pattern
 
 
+@registry_ignore_patterns('blocks')
+def create_softmax_div_pattern():
+    pattern = PatternBuilder()
+    exp_out = pattern.append_single_op('Exp', 'exp').get_last_node()
+    reduce_out = pattern.append_op_const('ReduceSum', 'reduce').get_last_node()
+    pattern.insert_single_op([exp_out, reduce_out], None, 'Divide', 'div')
+    return pattern.set_name('softmax_div').pattern
+
+
 @registry_ignore_patterns('blocks')
 def create_softmax_reshape_matmul_pattern():
     pattern = PatternBuilder()