rust: bits: add support for bits/genmask macros

In light of bindgen being unable to generate bindings for macros, and
owing to the widespread use of these macros in drivers, manually define
the bit and genmask C macros in Rust.

The *_checked version of the functions provide runtime checking while
the const version performs compile-time assertions on the arguments via
the build_assert!() macro.

Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Alexandre Courbot <[email protected]>
Signed-off-by: Daniel Almeida <[email protected]>
Reviewed-by: Danilo Krummrich <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ `expect`ed Clippy warning in doctests, hid single `use`, grouped
  examples. Reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>

0 files changed, 0 insertions, 0 deletions