ASoC: Make S3C64xx clock export function to return struct clk

This makes the interface usable with the s3c-iis-v2 rate calculator
and consistent with S3C2412.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/s3c24xx/s3c64xx-i2s.c b/sound/soc/s3c24xx/s3c64xx-i2s.c
index 7679f7b..cb11f78 100644
--- a/sound/soc/s3c24xx/s3c64xx-i2s.c
+++ b/sound/soc/s3c24xx/s3c64xx-i2s.c
@@ -108,14 +108,13 @@
 	return 0;
 }
 
-
-unsigned long s3c64xx_i2s_get_clockrate(struct snd_soc_dai *dai)
+struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
 {
 	struct s3c_i2sv2_info *i2s = to_info(dai);
 
-	return clk_get_rate(i2s->iis_cclk);
+	return i2s->iis_cclk;
 }
-EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clockrate);
+EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);
 
 static int s3c64xx_i2s_probe(struct platform_device *pdev,
 			     struct snd_soc_dai *dai)