Fix clang-tidy for native CPU ops (#57037)
Summary:
Attempts to call clang-tidy on any source file in
`aten/src/ATen/cpu/native` would fail with series of
```
/Users/nshulga/git/pytorch-worktree/aten/src/ATen/native/cpu/Activation.cpp:637:1: warning: variable 'REGISTER_DISPATCH' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables]
/Users/nshulga/git/pytorch-worktree/aten/src/ATen/native/cpu/Activation.cpp:638:1: error: C++ requires a type specifier for all declarations [clang-diagnostic-error]
REGISTER_DISPATCH(log_sigmoid_backward_cpu_stub, &log_sigmoid_backward_cpu_kernel);
```
because those macros are only defined for cpu-arch specific compilation of above mentioned files.
Fix this by introducing `map_filename` function that will map source
file to its copy in `build` folder, run clang-tidy over the copy and
than map it back
Find it while working on https://github.com/pytorch/pytorch/pull/56892
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57037
Reviewed By: walterddr
Differential Revision: D28033760
Pulled By: malfet
fbshipit-source-id: b67cd007000574ecc165ab4b285c0c102cbceadd
