ASoC: add snd_soc_dapm_kcontrol_component()

snd_soc_dapm_kcontrol_codec() (= for Codec) will be removed soon.
This patch Component version of it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1524,6 +1524,19 @@ static inline struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(
 	return snd_soc_dapm_to_codec(snd_soc_dapm_kcontrol_dapm(kcontrol));
 }
 
+/**
+ * snd_soc_dapm_kcontrol_component() - Returns the component associated to a kcontrol
+ * @kcontrol: The kcontrol
+ *
+ * This function must only be used on DAPM contexts that are known to be part of
+ * a COMPONENT (e.g. in a COMPONENT driver). Otherwise the behavior is undefined.
+ */
+static inline struct snd_soc_component *snd_soc_dapm_kcontrol_component(
+	struct snd_kcontrol *kcontrol)
+{
+	return snd_soc_dapm_to_component(snd_soc_dapm_kcontrol_dapm(kcontrol));
+}
+
 /* codec IO */
 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
 int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg,