ASoC: simple-card-utils: multi support at asoc_simple_canonicalize_cpu/platform()

Current asoc_simple_canonicalize_cpu/platform() is assuming single CPU,
single Platform, but we want to support Multi support.
This patch is prepare for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87im4swf8y.wl-kuninori.morimoto.gx@renesas.com


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