ASoC: update snd_pcm_ops copy interface in platform drivers

snd_pcm_ops copy interface used by msm platform drivers is replaced
with copy_user in msm-4.14. Unit of two input variables is changed
from frame count to byte.
Update all the related msm platform drivers to adapt to this change.

Change-Id: Icecd0454c7a80e5ee90407c64aaf1ca76d2d9815
Signed-off-by: Meng Wang <mwang@codeaurora.org>