ASoC: wcd9335: Reset spline resampler after playback

Reset spline resampler after audio playback is completed
to clear the FIFO and avoid any noise being generated.

Change-Id: I30ed6a337c3bb08f6197f7ee575b323f0b0acfac
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>