rust: enable raw_ref_op feature

Since Rust 1.82.0 the `raw_ref_op` feature is stable.

By enabling this feature we can use `&raw place` and `&raw mut place`
instead of using `addr_of!(place)` and `addr_of_mut!(place)` macros.

This will allow us to reduce macro complexity, and improve consistency
with existing reference syntax as `&raw`, `&raw mut` is very similar to
`&`, `&mut` making it fit more naturally with other existing code.

Suggested-by: Benno Lossin <[email protected]>
Link: Rust-for-Linux#1148
Signed-off-by: Antonio Hickey <[email protected]>

Author: antonio-hickey

rust/kernel/lib.rs

@@ -19,6 +19,8 @@
 #![cfg_attr(not(CONFIG_RUSTC_HAS_COERCE_POINTEE), feature(unsize))]
 #![feature(inline_const)]
 #![feature(lint_reasons)]
+// Stable in Rust 1.82
+#![feature(raw_ref_op)]
 // Stable in Rust 1.83
 #![feature(const_maybe_uninit_as_mut_ptr)]
 #![feature(const_mut_refs)]