samples: rust: add Rust dma test sample driver

Add a simple driver to exercise the basics of the Rust DMA
coherent allocator bindings.

Suggested-by: Danilo Krummrich <[email protected]>
Signed-off-by

samples: rust: add Rust dma test sample driver

Add a simple driver to exercise the basics of the Rust DMA
coherent allocator bindings.

Suggested-by: Danilo Krummrich <[email protected]>
Signed-off-by: Abdiel Janulgue <[email protected]>
Acked-by: Danilo Krummrich <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Renamed Kconfig symbol and moved it up. Migrated to the new
`authors` key in `module!`. Fixed module name in description
and typo in commit message. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>

show more ...