[PATCH v2] rust: helpers: Remove volatile qualifier from io helpers

[Miguel Ojeda]

On Sat, Apr 12, 2025 at 2:54 AM FUJITA Tomonori
<fujita.tomonori at gmail.com> wrote:
>
> Remove the `volatile` qualifier used with __iomem in helper functions
> in io.c. These helper functions are just wrappers around the
> corresponding accessors so they are unnecessary.
>
> This fixes the following UML build error with CONFIG_RUST enabled:

Applied to `rust-fixes` -- thanks everyone!

    [ Reworded for relative paths. - Miguel ]

Cheers,
Miguel