ASoC: add machine driver for sa8295 based automotive platform

Add machine driver for SA8295 based automotive platform,
which extended support for TDM interfaces which is used
for data transfer between SA8295 SoC and the automotive
COODEC H/W. Changes include TDM backend and refactored
automotive frontend DAI links as well as kcontrol functions
to configure TDM slot and offset configuration.

Change-Id: I82b2e4515443a5bd7bec8af34447a537cec5ecf3
Signed-off-by: Deru Wang <deruwang@codeaurora.org>