`#[rustfmt::skip]` attribute incompatible with `#[unsafe(naked)]`

[Amanieu]

The following code fails to compile due to attribute checks on naked functions being too strict.

#[rustfmt::skip]
#[unsafe(naked)]
extern "C" fn naked() {
    core::arch::naked_asm!("");
}

error[E0736]: attribute incompatible with `#[unsafe(naked)]`
 --> src/lib.rs:1:1
  |
1 | #[rustfmt::skip]
  | ^^^^^^^^^^^^^^^^ the `rustfmt::skip` attribute is incompatible with `#[unsafe(naked)]`
2 | #[unsafe(naked)]
  | ---------------- function marked with `#[unsafe(naked)]` here

For more information about this error, try `rustc --explain E0736`.
error: could not compile `playground` (lib) due to 1 previous error

cc @folkertdev