ASoC: SOF: control: fix cppcheck warning in snd_sof_volume_info()

Fix cppcheck warning:

sound/soc/sof/control.c:117:82: style:inconclusive: Function
'snd_sof_volume_info' argument 2 names different: declaration
'ucontrol' definition 'uinfo'. [funcArgNamesDifferent]

Fixes: fca18e62 ("ASoC: SOF: control: override volume info callback")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20201204170313.2704499-1-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-audio.h

@@ -125,7 +125,7 @@ int snd_sof_volume_get(struct snd_kcontrol *kcontrol,
 int snd_sof_volume_put(struct snd_kcontrol *kcontrol,
 		       struct snd_ctl_elem_value *ucontrol);
 int snd_sof_volume_info(struct snd_kcontrol *kcontrol,
-			struct snd_ctl_elem_info *ucontrol);
+			struct snd_ctl_elem_info *uinfo);
 int snd_sof_switch_get(struct snd_kcontrol *kcontrol,
 		       struct snd_ctl_elem_value *ucontrol);
 int snd_sof_switch_put(struct snd_kcontrol *kcontrol,