ASoC: pxa2xx-i2s: Add clk_prepare/clk_unprepare calls

This patch adds clk_prepare/clk_unprepare calls to the pxa2xx-i2s
driver by using the helper functions clk_prepare_enable and
clk_disable_unprepare.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/pxa/pxa2xx-i2s.c b/sound/soc/pxa/pxa2xx-i2s.c
index 609abd5..453b092 100644
--- a/sound/soc/pxa/pxa2xx-i2s.c
+++ b/sound/soc/pxa/pxa2xx-i2s.c
@@ -165,7 +165,7 @@
 	struct pxa2xx_pcm_dma_params *dma_data;
 
 	BUG_ON(IS_ERR(clk_i2s));
-	clk_enable(clk_i2s);
+	clk_prepare_enable(clk_i2s);
 	clk_ena = 1;
 	pxa_i2s_wait();
 
@@ -258,7 +258,7 @@
 		SACR0 &= ~SACR0_ENB;
 		pxa_i2s_wait();
 		if (clk_ena) {
-			clk_disable(clk_i2s);
+			clk_disable_unprepare(clk_i2s);
 			clk_ena = 0;
 		}
 	}