ASoC: Intel: sof_ssp_amp: enable capture stream from cs35l41

Enable capture stream of the cs35l41 dai link to support feedback
stream from amplifier.

Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220509170922.54868-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_ssp_amp.c

@@ -258,6 +258,9 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
 		sof_rt1308_dai_link(&links[id]);
 	} else if (sof_ssp_amp_quirk & SOF_CS35L41_SPEAKER_AMP_PRESENT) {
 		cs35l41_set_dai_link(&links[id]);
+
+		/* feedback from amplifier */
+		links[id].dpcm_capture = 1;
 	}
 	links[id].platforms = platform_component;
 	links[id].num_platforms = ARRAY_SIZE(platform_component);