ASoC: S3C64XX I2S: Enable audio-bus clock

Added the missing clk_enable after acquiring the 'audio-bus' clock.
Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/s3c24xx/s3c64xx-i2s.c

@@ -220,6 +220,8 @@ static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	clk_enable(i2s->iis_cclk);
+
 	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
 	if (ret)
 		goto err_clk;