ASoC: wm8994: 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/wm8994.c

@@ -289,10 +289,8 @@ static const DECLARE_TLV_DB_SCALE(ng_tlv, -10200, 600, 0);
 static const DECLARE_TLV_DB_SCALE(mixin_boost_tlv, 0, 900, 0);
 
 #define WM8994_DRC_SWITCH(xname, reg, shift) \
-{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
-	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
-	.put = wm8994_put_drc_sw, \
-	.private_value =  SOC_SINGLE_VALUE(reg, shift, 1, 0) }
+	SOC_SINGLE_EXT(xname, reg, shift, 1, 0, \
+		snd_soc_get_volsw, wm8994_put_drc_sw)
 
 static int wm8994_put_drc_sw(struct snd_kcontrol *kcontrol,
 			     struct snd_ctl_elem_value *ucontrol)
@@ -1432,10 +1430,8 @@ SOC_DAPM_SINGLE("AIF1.1 Switch", WM8994_DAC2_RIGHT_MIXER_ROUTING,
 };
 
 #define WM8994_CLASS_W_SWITCH(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 = wm8994_put_class_w, \
-	.private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
+	SOC_SINGLE_EXT(xname, reg, shift, max, invert, \
+		snd_soc_get_volsw, wm8994_put_class_w)
 
 static int wm8994_put_class_w(struct snd_kcontrol *kcontrol,
 			      struct snd_ctl_elem_value *ucontrol)