ASoC: soc.h: remove num_cpus/codecs

Current rtd has both dai_link pointer (A) and num_cpus/codecs (B).

(A)	rtd->dai_link	= dai_link;
(B)	rtd->num_cpus	= dai_link->num_cpus;
(B)	rtd->num_codecs	= dai_link->num_codecs;

But, we can get num_cpus/codecs (B) via dai_link (A).
This means we don't need to keep num_cpus/codecs on rtd.
This patch removes these.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sfkmv9n3.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>