Created by: Fauny

ppyolo 模型，导出的model，包括经剪裁和量化后导出到模型， 使用 lite 转换工具opt v2.6.1 导出时报错

x86:

./opt --model_dir=/home/aistudio/work/model_final/int \
--optimize_out_type=naive_buffer \
--optimize_out=./model \
--valid_targets=x86
[I  9/12  9:40: 8.750 ...se_2.6/2.6.1/Paddle-Lite/lite/api/opt.cc:381 CheckIfModelSupported] 
Error: This model is not supported, because 13 ops are not supported on 'x86'. 
These unsupported ops are: 
'assign_value, clip, deformable_conv, elementwise_div, elementwise_mul, fill_constant, log,
 matrix_nms, nearest_interp, pow, sigmoid, split, yolo_box'.

arm:

./opt --model_dir=/home/aistudio/work/model_final/int \
--optimize_out_type=naive_buffer \
--optimize_out=./model \
--valid_targets=arm
[I  9/12  9:16:23.452 ...se_2.6/2.6.1/Paddle-Lite/lite/api/opt.cc:381 CheckIfModelSupported] 
Error: This model is not supported, because 4 ops are not supported on 'arm'. 
These unsupported ops are: 
'clip, deformable_conv, matrix_nms, pow'.