ASoC: soc-pcm.c: cleanup soc_get_playback_capture() error

ASoC: soc-pcm.c: cleanup soc_get_playback_capture() error

soc_get_playback_capture() (A) checks dai_link status, and indicate error
if it was not matching (B).

(A)	static int soc_get_playback_capture(...)
	{
		...
 ^		if (dai_link->dynamic && dai_link->num_cpus > 1) {
 |			dev_err(rtd->dev,
(B)				"DPCM doesn't support Multi CPU for Front-Ends yet\n");
 |			return -EINVAL;
 v		}
		...
	}

We can use 100 char for 1 line today. This patch cleanup error code line.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87v8gazlqk.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>