ASoC: Intel: sof_sdw: use playback/capture_only flags

Prepare for removal of dpcm_playback and dpcm_capture flags in
dailinks.

[Kuninori adjusted Pierre-Louis's patch]
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87o75maah5.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sdw_utils/soc_sdw_utils.c

@@ -950,8 +950,8 @@ void asoc_sdw_init_dai_link(struct device *dev, struct snd_soc_dai_link *dai_lin
 	dai_links->num_cpus = cpus_num;
 	dai_links->codecs = codecs;
 	dai_links->num_codecs = codecs_num;
-	dai_links->dpcm_playback = playback;
-	dai_links->dpcm_capture = capture;
+	dai_links->playback_only =  playback && !capture;
+	dai_links->capture_only  = !playback &&  capture;
 	dai_links->init = init;
 	dai_links->ops = ops;
 }