ARM: S5P6440: Enable I2S device to work on SMDK6440
Add missing virtual ASoC DMA device and WM8580 as I2C slave,
so that the I2S can work on SMDK6440.
[kgene.kim@samsung.com: removed virtual ASoC DMA device
to avoid build error and it will be added next time]
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>