ASoC: wm_hubs: Use SOC_SINGLE_EXT() instead of open-coding it

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/wm_hubs.c

@@ -693,10 +693,8 @@ void wm_hubs_update_class_w(struct snd_soc_codec *codec)
 EXPORT_SYMBOL_GPL(wm_hubs_update_class_w);
 
 #define WM_HUBS_SINGLE_W(xname, reg, shift, max, invert) \
-{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
-	.info = snd_soc_info_volsw, \
-	.get = snd_soc_dapm_get_volsw, .put = class_w_put_volsw, \
-	.private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
+	SOC_SINGLE_EXT(xname, reg, shift, max, invert, \
+		snd_soc_dapm_get_volsw, class_w_put_volsw)
 
 static int class_w_put_volsw(struct snd_kcontrol *kcontrol,
 			      struct snd_ctl_elem_value *ucontrol)