ASoC: SAMSUNG: Add I2S0 internal dma driver

I2S in Exynos4 and S5PC110(S5PV210) has a internal dma.
It can be used low power audio mode and 2nd channel transfer.
This patch can support idma.

[Reapplied after dependencies propagated through in 3.1-rc1. --broonie]

Signed-off-by: Sangbeom Kim <[email protected]>
Acked-by: Jassi Brar <[email protected]>
Acked-by: Liam Girdwood <[email protected]>
Acked-by: Jassi Brar <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
3 files changed