Rollup merge of #141992 - folkertdev:probestack-naked-function, r=tgross35

use `#[naked]` for `__rust_probestack`

Let's see if this works now.

Previously this change was in rust-lang#897, but we decided to wait until `compiler-builtins` was a subtree (and also `cfg(bootstrap)` is gone now).

r? ``@tgross35``  cc ``@bjorn3``

try-job: `dist-various*`
try-job: `test-various*`

Author: fmease

compiler-builtins/src/lib.rs

@@ -8,6 +8,7 @@
 #![feature(linkage)]
 #![feature(naked_functions)]
 #![feature(repr_simd)]
+#![feature(rustc_attrs)]
 #![cfg_attr(f16_enabled, feature(f16))]
 #![cfg_attr(f128_enabled, feature(f128))]
 #![no_builtins]