It is expected that the SAI subnodes would contain audio OF graph port
with endpoint to link it with the other side of audio link. Document
the port: property.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://lore.kernel.org/r/20220927002004.685108-1-marex@denx.deSigned-off-by: Mark Brown <broonie@kernel.org>