ASoC: msm8974: Fix seek bar issue for WMA playback

Seek bar was not updated while wma playback is active.
Issue was that lsw and msw timestamp fields were wrongly
parsed before being sent to the user space.
Provide a fix for this by parsing the lsw and msw timestamp
correctly before being sent to userspace.

Change-Id: I118c7a8fe446d79981a7948ad78ad0fbe0b096af
Signed-off-by: Phani Kumar Uppalapati <phanik@codeaurora.org>