ASoC: max98357a: Use DAI input as a dapm widget

Spec does not say anything about DAC called SDMode.
It makes more sense to use DAI input that created automatically by DAPM
and route it to Speaker output.
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max98357a.c

@@ -51,12 +51,11 @@ static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
 }
 
 static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
-	SND_SOC_DAPM_DAC("SDMode", NULL, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_OUTPUT("Speaker"),
 };
 
 static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
-	{"Speaker", NULL, "SDMode"},
+	{"Speaker", NULL, "HiFi Playback"},
 };
 
 static int max98357a_codec_probe(struct snd_soc_codec *codec)