ARM: S5P6442: Enable I2S device to work on SMDK6442

Add missing virtual ASoC DMA device.
Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[kgene.kim@samsung.com: minor changed title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s5p6442/mach-smdk6442.c

@@ -68,6 +68,7 @@ static struct s3c2410_uartcfg smdk6442_uartcfgs[] __initdata = {
 
 static struct platform_device *smdk6442_devices[] __initdata = {
 	&s3c_device_i2c0,
+	&samsung_asoc_dma,
 	&s5p6442_device_iis0,
 	&s3c_device_wdt,
 };