ASoC: arizona: Add new common Arizona init function

Currently the driver has quite a few small initialisation functions, in
preparation for some refactoring add a new function arizona_init_common.
This will be used bus probe level initialisation that is common across
Arizona devices. For now just move the notifier chain initialisation in
there.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8997.c

@@ -1068,8 +1068,6 @@ static int wm8997_codec_probe(struct snd_soc_codec *codec)
 	if (ret < 0)
 		return ret;
 
-	arizona_init_notifiers(codec);
-
 	snd_soc_component_disable_pin(component, "HAPTICS");
 
 	priv->core.arizona->dapm = dapm;
@@ -1168,6 +1166,8 @@ static int wm8997_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_idle(&pdev->dev);
 
+	arizona_init_common(arizona);
+
 	ret = arizona_init_spk_irqs(arizona);
 	if (ret < 0)
 		return ret;