Rollup merge of #142681 - 1c3t3a:sanitize-off-on, r=rcvalle

Remove the `#[no_sanitize]` attribute in favor of `#[sanitize(xyz = "on|off")]`

This came up during the sanitizer stabilization (rust-lang/rust#123617). Instead of a `#[no_sanitize(xyz)]` attribute, we would like to have a `#[sanitize(xyz = "on|off")]` attribute, which is more powerful and allows to be extended in the future (instead
of just focusing on turning sanitizers off). The implementation is done according to what was [discussed on Zulip](https://rust-lang.zulipchat.com/#narrow/channel/343119-project-exploit-mitigations/topic/Stabilize.20the.20.60no_sanitize.60.20attribute/with/495377292)).

The new attribute also works on modules, traits and impl items and thus enables usage as the following:
```rust
#[sanitize(address = "off")]
mod foo {
    fn unsanitized(..) {}

    #[sanitize(address = "on")]
    fn sanitized(..) {}
}

trait MyTrait {
  #[sanitize(address = "off")]
  fn unsanitized_default(..) {}
}

#[sanitize(thread = "off")]
impl MyTrait for () {
    ...
}
```

r? ```@rcvalle```

1 files changed, 1 insertions, 0 deletions

diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index 3ed483db3c4..65a52b27d3b 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -1261,6 +1261,7 @@ symbols! {
         iterator,
         iterator_collect_fn,
         kcfi,
+        kernel_address,
         keylocker_x86,
         keyword,
         kind,