ASoC: dapm: use clk_prepare_enable and clk_disable_unprepare

Update dapm_clock_event to use clk_prepare_enable and
clk_disable_unprepare.
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-dapm.c

@@ -1070,9 +1070,9 @@ int dapm_clock_event(struct snd_soc_dapm_widget *w,
 
 #ifdef CONFIG_HAVE_CLK
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
-		return clk_enable(w->clk);
+		return clk_prepare_enable(w->clk);
 	} else {
-		clk_disable(w->clk);
+		clk_disable_unprepare(w->clk);
 		return 0;
 	}
 #endif