ASoC: SMDK64XX: Move to use new I2S driver

Modify the smdk64xx_wm8580.c to use new i2s controller driver.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>