ASoC: qcom: fixes for Click/Pop Noise

Merge series from Srinivas Kandagatla <srinivas.kandagatla@linaro.org>:

Click/Pop Noise was a long pending issue with WSA Codecs which are prone
to accumlate DC when ports are active but without any data streams.
There are multiple places in the current setup, where this could happen
in both startup as well as shutdown path.

sound/soc/qcom/qdsp6/q6apm-lpass-dais.c

@@ -130,6 +130,9 @@ static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct s
 	if (dai_data->is_port_started[dai->id]) {
 		q6apm_graph_stop(dai_data->graph[dai->id]);
 		dai_data->is_port_started[dai->id] = false;
+
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			q6apm_graph_close(dai_data->graph[dai->id]);
 	}
 
 	/**

sound/soc/qcom/sdw.c

@@ -32,11 +32,8 @@ int qcom_snd_sdw_prepare(struct snd_pcm_substream *substream,
 		return 0;
 	}
 
-	if (*stream_prepared) {
-		sdw_disable_stream(sruntime);
-		sdw_deprepare_stream(sruntime);
-		*stream_prepared = false;
-	}
+	if (*stream_prepared)
+		return 0;
 
 	ret = sdw_prepare_stream(sruntime);
 	if (ret)