ASoC: Samsung: Rename DMA device

Some Samsung SoCs have a PCM(DSP) controller. So the name
s3c24xx-pcm-audio for DMA driver is not very appropraite.
This patch moves :-
	s3c24xx-pcm-audio -> samsung-audio

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c b/sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
index f2f70a9..1de5857 100644
--- a/sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
+++ b/sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
@@ -88,7 +88,7 @@
 	.codec_name	= "tlv320aic3x-codec.0-0x1a",
 	.cpu_dai_name	= "s3c24xx-i2s",
 	.codec_dai_name = "tlv320aic3x-hifi",
-	.platform_name	= "s3c24xx-pcm-audio",
+	.platform_name	= "samsung-audio",
 	.init		= simtec_tlv320aic23_init,
 };