Implements the SPIO RTIO API. Refactors internal transcive
fucntios to work with both existing SPI API and RTIO functions.
When SPI_RTIO is enabled the spi_transcieve call translates
the request into an RTIO transaction placed in the queue
that device will execute.
Include the latest refacor changes of RTIO.
Signed-off-by: Dimitrije Lilic <dimitrije.lilic@orioninc.com>
