clean/mrproper does not work as expected

[kloenk]

This files are staying behind after running mrproper, at the current objtree:

Would remove rust/bindings_generated.rs
Would remove rust/exports_alloc_generated.h
Would remove rust/exports_core_generated.h
Would remove rust/exports_kernel_generated.h
Would remove rust/libmodule.so

[kloenk]

This is still open. @ojeda could you look at this? Also we wanted to change the prio to high, so it does not bite someone.

[kloenk]

Works now. Thanks