ASoC: fix a simple coding style issue

Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-dapm.c

@@ -1597,7 +1597,7 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 	}
 
 	/* connect dynamic paths */
-	switch(wsink->id) {
+	switch (wsink->id) {
 	case snd_soc_dapm_adc:
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_pga: