davinci: add ssp config for tnetv107x evm board

This patch adds SSP configuration and pin muxing info for tnetv107x
evm boards.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>