ASoC: remove unneeded semicolons in wcd934x.c

Fix following coccicheck warning:
./sound/soc/codecs/wcd934x.c:5136:2-3: Unneeded semicolon
./sound/soc/codecs/wcd934x.c:2466:2-3: Unneeded semicolon
./sound/soc/codecs/wcd934x.c:2527:2-3: Unneeded semicolon

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Link: https://lore.kernel.org/r/20210608030656.24052-1-wanjiabing@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wcd934x.c

@@ -2463,7 +2463,7 @@ static int wcd934x_micbias_control(struct snd_soc_component *component,
 		dev_err(component->dev, "%s: Invalid micbias number: %d\n",
 			__func__, micb_num);
 		return -EINVAL;
-	};
+	}
 	mutex_lock(&wcd934x->micb_lock);
 
 	switch (req) {
@@ -2524,7 +2524,7 @@ static int wcd934x_micbias_control(struct snd_soc_component *component,
 			wcd_mbhc_event_notify(wcd934x->mbhc,
 					      WCD_EVENT_POST_DAPM_MICBIAS_2_OFF);
 		break;
-	};
+	}
 
 	mutex_unlock(&wcd934x->micb_lock);
 
@@ -5133,7 +5133,7 @@ static int wcd934x_codec_enable_micbias(struct snd_soc_dapm_widget *w,
 	case SND_SOC_DAPM_POST_PMD:
 		wcd934x_micbias_control(component, micb_num, MICB_DISABLE, true);
 		break;
-	};
+	}
 
 	return 0;
 }