* move api(erfinv) from legacy_api.yaml to api.yaml

* change inplace_map key

* phi_prior_box

* add float[] support

* phi_prior_box_optest

* update

* [Phi] Add yaml for assign_value

* [Phi] Fix the bug of the assign api and modify the unittest

* [Phi] Fix the bug when the tensor does not have the backend info

* [Phi] Replace the functional-style cast init by the brace-init

* [Phi] Cast the data explicitly

* support auto fallback to  cpu kernel for cusom device

* fix some problem of kernel fallback

* fix typos in template for codegen of operators
* change the way to set attributes for grad op maker

* [Phi] migrate exponential kernel to phi

* fix comment

* fix CI

* remove auto to_pascal_case for args in op generator

* fix yaml config

* move yaml to phi

* fix undef var error