ASoC: wm_hubs: Replace w->codec snd_soc_dapm_to_codec(w->dapm)

The codec field of the snd_soc_widget struct is eventually going to be
removed, use snd_soc_dapm_to_codec(w->dapm) instead.

Signed-off-by: Lars-Peter Clausen <[e-mail]>
Acked-by: Charles Keepax <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/wm_hubs.c

···
 static int hp_supply_event(struct snd_soc_dapm_widget *w,
 			   struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
 
 	switch (event) {
···
 static int hp_event(struct snd_soc_dapm_widget *w,
 		    struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	unsigned int reg = snd_soc_read(codec, WM8993_ANALOGUE_HP_0);
 
 	switch (event) {
···
 static int earpiece_event(struct snd_soc_dapm_widget *w,
 			  struct snd_kcontrol *control, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	u16 reg = snd_soc_read(codec, WM8993_ANTIPOP1) & ~WM8993_HPOUT2_IN_ENA;
 
 	switch (event) {
···
 static int lineout_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *control, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
 	bool *flag;
 
···
 static int micbias_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol, int event)
 {
-	struct snd_soc_codec *codec = w->codec;
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
 
 	switch (w->shift) {