ASoC: rsnd: use DAI driver ID instead of DAI ID

Current rsnd is using DAI ID to get own priv data without setting
driver->id. It was no problem for Single Component, but will be problem
in case of Multi Component, because it is not a DAI serial number.

	struct snd_soc_dai *snd_soc_register_dai(...)
	{
		...
		if (dai_drv->id)
			dai->id = dai_drv->id;
		else
			dai->id = component->num_dai;
		...
	}

This patch sets driver->id, and get serial number.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87wmyqb1mm.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: Mark Brown <broonie@kernel.org>