ASoC: msm: Machine driver async ops change for msm8996

Asoc framework supports parallelization of operations which
reduces the startup latency. Machine driver will specify
which dailinks support parallelization. This change updates the
machine driver to enable the parallelization. Set the ASYNC flag
for some basic dailinks in msm8996.

Change-Id: If85fcfb7288963b173b94abd9f00da770c3fbb40
Signed-off-by: Walter Yang <yandongy@codeaurora.org>
Signed-off-by: Fred Oh <fred@codeaurora.org>