ASoC: Replace remaining use of *_volsw_2r with *_volsw

The snd_soc_*_volsw_2r functionality has been merged to
*volsw callbacks.
Few places still used the get, or put variant of volsw_2r,
replace those with the corresponding *_volsw.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index f3583a5..84f33d4 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -222,7 +222,7 @@
 	struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
 	int ret;
 
-	ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
+	ret = snd_soc_put_volsw(kcontrol, ucontrol);
 
 	/* Updating the analogue gains invalidates the DC servo cache */
 	hubs->class_w_dcs = 0;
@@ -364,7 +364,7 @@
 
 SOC_DOUBLE_R_EXT_TLV("Headphone Volume",
 		     WM8993_LEFT_OUTPUT_VOLUME, WM8993_RIGHT_OUTPUT_VOLUME,
-		     0, 63, 0, snd_soc_get_volsw_2r, wm8993_put_dc_servo,
+		     0, 63, 0, snd_soc_get_volsw, wm8993_put_dc_servo,
 		     outpga_tlv),
 
 SOC_DOUBLE_R("Headphone Switch", WM8993_LEFT_OUTPUT_VOLUME,