Added STRIDED_SLICE and CONCAT to simple ops in requantize_flatbuffer.py (#1994)

adding simple ops to requantize_flatbuffer.
BUG=http://b/283242131

tensorflow/lite/micro/tools/requantize_flatbuffer.py

@@ -75,18 +75,20 @@ _COMPLEX_OP_REQUANTIZE_REGISTRATION = {
 
 # List of tested simple operators (no weight and bias, e.g., reshape) see tensorflow/lite/schema/schema.fbs for op code names
 _TESTED_SIMPLE_OPS = [
-    schema_py_generated.BuiltinOperator.RESHAPE,
-    schema_py_generated.BuiltinOperator.QUANTIZE,
+    schema_py_generated.BuiltinOperator.ADD,
+    schema_py_generated.BuiltinOperator.CONCATENATION,
     schema_py_generated.BuiltinOperator.DEQUANTIZE,
+    schema_py_generated.BuiltinOperator.LEAKY_RELU,
+    schema_py_generated.BuiltinOperator.LOGISTIC,
     schema_py_generated.BuiltinOperator.MEAN,
-    schema_py_generated.BuiltinOperator.SQUARED_DIFFERENCE,
-    schema_py_generated.BuiltinOperator.ADD,
-    schema_py_generated.BuiltinOperator.RSQRT,
     schema_py_generated.BuiltinOperator.MUL,
+    schema_py_generated.BuiltinOperator.PAD,
+    schema_py_generated.BuiltinOperator.QUANTIZE,
+    schema_py_generated.BuiltinOperator.RESHAPE,
+    schema_py_generated.BuiltinOperator.RSQRT,
+    schema_py_generated.BuiltinOperator.SQUARED_DIFFERENCE,
+    schema_py_generated.BuiltinOperator.STRIDED_SLICE,
     schema_py_generated.BuiltinOperator.SUB,
-    schema_py_generated.BuiltinOperator.LEAKY_RELU,
-    schema_py_generated.BuiltinOperator.LOGISTIC,
-    schema_py_generated.BuiltinOperator.PAD
 ]
 
 _SUPPORTED_OPS = set(