ASoC: soc-pcm: add soc_cpu/codec_dai_name() macro

soc-pcm needs DAI name and it will be "multicpu/multicodec" if it has
many DAIs. But current code is using very verbose for it.
This patch uses macro and makes code simple.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87im61uobf.wl-kuninori.morimoto.gx@renesas.com


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