ASoC: soc-core: use soc_find_component() at snd_soc_get_dai_id()

soc-core core already has soc_find_component() which find
component from device node.
Let's use existing function to find component.

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