ASoC: SOF: Intel: hda: move helper to static inline

To allow using widget_to_sdev() in other files, move it as static inline
in shared header file.
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://msgid.link/r/20240402151828.175002-12-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/hda-dai.c

@@ -29,14 +29,6 @@ static bool hda_use_tplg_nhlt;
 module_param_named(sof_use_tplg_nhlt, hda_use_tplg_nhlt, bool, 0444);
 MODULE_PARM_DESC(sof_use_tplg_nhlt, "SOF topology nhlt override");
 
-static struct snd_sof_dev *widget_to_sdev(struct snd_soc_dapm_widget *w)
-{
-	struct snd_sof_widget *swidget = w->dobj.private;
-	struct snd_soc_component *component = swidget->scomp;
-
-	return snd_soc_component_get_drvdata(component);
-}
-
 int hda_dai_config(struct snd_soc_dapm_widget *w, unsigned int flags,
 		   struct snd_sof_dai_config_data *data)
 {

sound/soc/sof/intel/hda.h

@@ -1000,4 +1000,12 @@ int hda_dai_config(struct snd_soc_dapm_widget *w, unsigned int flags,
 int hda_link_dma_cleanup(struct snd_pcm_substream *substream, struct hdac_ext_stream *hext_stream,
 			 struct snd_soc_dai *cpu_dai);
 
+static inline struct snd_sof_dev *widget_to_sdev(struct snd_soc_dapm_widget *w)
+{
+	struct snd_sof_widget *swidget = w->dobj.private;
+	struct snd_soc_component *component = swidget->scomp;
+
+	return snd_soc_component_get_drvdata(component);
+}
+
 #endif