ASoC: add ttc-dkb machine support

add ttc-dkb machine support for pxa910. It uses 88pm8607 as codec
dai, mmp-pcm as platform and pxa-ssp as cpu dai.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>