ASoC: intel: Revert "ASoC: Intel: remove unused function hsw_pcm_free_modules()"

This reverts commit 506c148e.

We still need this hsw_pcm_free_modules(), we plan to remove the
runtime modules at both fw_unload(D0->D3) and snd_soc_sst_haswell_pcm
module removing.
Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/haswell/sst-haswell-pcm.c

@@ -920,6 +920,21 @@ static int hsw_pcm_create_modules(struct hsw_priv_data *pdata)
 	return -ENODEV;
 }
 
+static void hsw_pcm_free_modules(struct hsw_priv_data *pdata)
+{
+	struct sst_hsw *hsw = pdata->hsw;
+	struct hsw_pcm_data *pcm_data;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
+		pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
+		sst_hsw_runtime_module_free(pcm_data->runtime);
+	}
+	if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES)) {
+		sst_hsw_runtime_module_free(pdata->runtime_waves);
+	}
+}
+
 static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_pcm *pcm = rtd->pcm;