dma: dmaengine: Remove BUG_ON condition in dma_cookie_complete

Currently on EXYNOS4210 based Origen board, we hit this BUG_ON
condition (not sure what is missing). But after commenting this out
audio playback works fine. Commenting this till further
investigation.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
1 file changed