firmware: stratix10-rsu: Migrate RSU driver to use stratix10 asynchronous framework.

* Add support for asynchronous communication to the RSU client channel.
* Migrate functions that communicate with the SDM to use the asynchronous
  framework.

Signed-off-by: Mahesh Rao <mahesh.rao@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
1 file changed