ASoC: Intel: sof_sdw: add amp number in components string for ucm

The number of speaker amplifiers may vary between platforms. UCM
needs to check amp number to include different configuration files.
This patch keeps track of the number of speaker amplifiers and
stores it in components string of the card.

Tested on Comet Lake platforms.
Signed-off-by: randerwang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20200419183509.4134-1-yung-chuan.liao@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_sdw.c

@@ -909,6 +909,7 @@ static int mc_probe(struct platform_device *pdev)
 	struct snd_soc_card *card = &card_sof_sdw;
 	struct snd_soc_acpi_mach *mach;
 	struct mc_private *ctx;
+	int amp_num = 0, i;
 	int ret;
 
 	dev_dbg(&pdev->dev, "Entry %s\n", __func__);
@@ -935,9 +936,18 @@ static int mc_probe(struct platform_device *pdev)
 
 	snd_soc_card_set_drvdata(card, ctx);
 
+	/*
+	 * the default amp_num is zero for each codec and
+	 * amp_num will only be increased for active amp
+	 * codecs on used platform
+	 */
+	for (i = 0; i < ARRAY_SIZE(codec_info_list); i++)
+		amp_num += codec_info_list[i].amp_num;
+
 	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
-					  "cfg-spk:%d",
-					  (sof_sdw_quirk & SOF_SDW_FOUR_SPK) ? 4 : 2);
+					  "cfg-spk:%d, cfg-amp:%d",
+					  (sof_sdw_quirk & SOF_SDW_FOUR_SPK)
+					  ? 4 : 2, amp_num);
 	if (!card->components)
 		return -ENOMEM;