msm: audio: Fix for WMA seek issue

- Seeking during WMA playback results in no audio.
- Input and output port flush were not called during
  seek which resulted in no WRTE_DONE ack from DSP to
  AIO driver.
- Fix is to add input and output port flush during seek.

Change-Id: I61b7f72211e64bf437566bf48cc009631e918900
CRs-fixed: 453026
Signed-off-by: Amal Paul <amal@codeaurora.org>
1 file changed