ASoC: pcm: update the start-up sequence for playback

Codec should be started before the CPU to ensure that there is no data
loss during playback.Current sequence enables the CPU first followed by
codec.This change updates the sequence prevent any playback data loss.

Change-Id: Iaf01d153f41a2f94d302ae7f4c1c98b1361dd24f
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>