ASoC: rsnd: move pcm_new from snd_soc_component_driver to snd_soc_dai_driver

snd_soc_dai_driver :: pcm_new has snd_soc_dai as parameter, but
snd_soc_component_driver :: pcm_new doesn't have it.

rsnd driver needs snd_soc_dai at pcm_new.
This patch moves .pcm_new from snd_soc_component_driver to
snd_soc_dai_driver, and don't use rtd->cpu_dai anymore.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>