Expose c10 cuda ops to caffe2 (#18036)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/18036
- Add macros to export c10 cuda operators to caffe2 frontend
- Instead of having a separate caffe2 registry for the c10 operator wrappers, use the existing caffe2 registries
Reviewed By: ezyang
Differential Revision: D14467495
fbshipit-source-id: 7715ed2e38d2bbe16f1446ae82c17193a3fabcb9
