Add device tree property to define auxiliary devices to be added to
Audio Graph Card which is already supported on Simle Card.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://msgid.link/r/87jzin3yc8.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>