* [NPU] fix for test_norm_op_npu

* [NPU] add norm_grad

* [NPU] add CheckAxis for axis

* [NPU] delete debug codes

* norm can not use L2Normalize, norm_grad can use L2NormalizeGrad

* [NPU] delete useless codes

* [NPU] optimize norm_grad OpMaker

* Update python import path

* Add NPU kernel for norm Op: float16 and float32

* fix code for code review

* fix for code review

* add type for paddle_throw

* remove unnecessary head file.\nAdd more testcase

* remove a broadcast