ASoC: rockchip: Use dummy_dai for rt5514 dsp dailink

The rt5514 dsp captures pcm data through spi directly, so we should not
use rockchip-i2s as it's cpu dai like other codecs.

Use dummy_dai for rt5514 dsp dailink to make voice wakeup work again.
Reported-by: Jimmy Cheng-Yi Chiang <cychiang@google.com>
Fixes: (72cfb0f2 ASoC: rockchip: Use codec of_node and dai_name for rt5514 dsp)
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rk3399_gru_sound.c

@@ -367,7 +367,8 @@ static const struct snd_soc_dai_link rockchip_dais[] = {
 	[DAILINK_RT5514_DSP] = {
 		.name = "RT5514 DSP",
 		.stream_name = "Wake on Voice",
-		.codec_dai_name = "rt5514-dsp-cpu-dai",
+		.codec_name = "snd-soc-dummy",
+		.codec_dai_name = "snd-soc-dummy-dai",
 	},
 };
 
@@ -528,7 +529,18 @@ static int rockchip_sound_of_parse_dais(struct device *dev,
 		if (index < 0)
 			continue;
 
-		np_cpu = (index == DAILINK_CDNDP) ? np_cpu1 : np_cpu0;
+		switch (index) {
+		case DAILINK_CDNDP:
+			np_cpu = np_cpu1;
+			break;
+		case DAILINK_RT5514_DSP:
+			np_cpu = np_codec;
+			break;
+		default:
+			np_cpu = np_cpu0;
+			break;
+		}
+
 		if (!np_cpu) {
 			dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
 				rockchip_dais[index].name);
@@ -538,7 +550,8 @@ static int rockchip_sound_of_parse_dais(struct device *dev,
 		dai = &card->dai_link[card->num_links++];
 		*dai = rockchip_dais[index];
 
-		dai->codec_of_node = np_codec;
+		if (!dai->codec_name)
+			dai->codec_of_node = np_codec;
 		dai->platform_of_node = np_cpu;
 		dai->cpu_of_node = np_cpu;