Tyr: work on a Rust version of read_poll_timeout_atomic()
read_poll_timeout_atomic() is used by Panthor in a few places, but there is no equivalent in Rust.
There is already some prior art by Fujita Tomori for the non-atomic version, but it is unclear whether he will really work on the atomic one.
This task covers the work to get the Rust bindings for read_poll_timeout_atomic() in kernel/io if Fujita doesn't pick it up. It also covers the work to replace the instances of non-atomic polls in Tyr as appropriate by comparing our code with Panthor.