ASoC: soc-core: remove legacy style dai_link

All drivers switched to modern style dai_link
(= struct snd_soc_dai_link_component).
Let's remove legacy style dai_link.

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