ASoC: soc-component: add snd_soc_component_to_dapm()

Because struct snd_soc_dapm_context is soc-dapm framework specific, user
driver don't need to access its member directly, we would like to hide
them. struct snd_soc_dapm_context will be removed from header in the
future.

Current dapm of card/component are using "instance", but it will be
"pointer" if snd_soc_dapm_context was removed from header.

snd_soc_component_to_dapm() is needed to switch to the new style while
maintaining compatibility

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/878qiux06m.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: morimoto

include/sound/soc-component.h

@@ -261,16 +261,19 @@ struct snd_soc_component {
 	list_for_each_entry_safe(dai, _dai, &(component)->dai_list, list)
 
 /**
- * snd_soc_component_get_dapm() - Returns the DAPM context associated with a
+ * snd_soc_component_to_dapm() - Returns the DAPM context associated with a
  *  component
  * @component: The component for which to get the DAPM context
  */
-static inline struct snd_soc_dapm_context *snd_soc_component_get_dapm(
+static inline struct snd_soc_dapm_context *snd_soc_component_to_dapm(
 	struct snd_soc_component *component)
 {
 	return &component->dapm;
 }
 
+// FIXME
+#define snd_soc_component_get_dapm	snd_soc_component_to_dapm
+
 /**
  * snd_soc_component_cache_sync() - Sync the register cache with the hardware
  * @component: COMPONENT to sync