ASoC: rsnd: enable multi Component support for Audio Graph Card/Card2

	+-- Basic Board ---------+
	|+--------+      +------+|
	|| CPU ch0| <--> |CodecA||
	||     ch1| <-+  +------+|
	|+--------+   |          |
	+-------------|----------+
	+-- expansion board -----+
	|             |  +------+|
	|             +->|CodecB||
	|                +------+|
	+------------------------+

In above HW connection case, we intuitively think we want to handle these
as "2 Sound Cards".

	card0,0: CPU-ch0 - CodecA
	card1,0: CPU-ch1 - CodecB

But, we needed to handle it as "1 big Sound Card", because of
Component vs Card limitation.

	card0,0: CPU-ch0 - CodecA
	card0,1: CPU-ch1 - CodecB

This patch enables multi Component to handle multi Cards.
To support it, it needs

	- Fill dai_args for each DAI on snd_soc_dai_driver
	- Parse DT for each Component (Simple Card/Audio Graph Card)

Ex) Simple Card

	rcar_sound {
		...

		/* Component0 */
		rcar_sound,dai@0 {
			...
		};

		/* Component1 */
		rcar_sound,dai@1 {
			...
		};
	};

Ex) Audio Graph Card/Card2

	rcar_sound {
		/* Component0 */
		ports@0 {
			...
		};

		/* Component1 */
		ports@1 {
			...
		};
	};

Signed-off-by: Kuninori Morimoto <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

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