dmaengine: remove unused DMA_SUCCESS

after all the users are converted

Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

include/linux/dmaengine.h

@@ -51,7 +51,7 @@ static inline int dma_submit_error(dma_cookie_t cookie)
  * @DMA_ERROR: transaction failed
  */
 enum dma_status {
-	DMA_SUCCESS = 0, DMA_COMPLETE = 0,
+	DMA_COMPLETE,
 	DMA_IN_PROGRESS,
 	DMA_PAUSED,
 	DMA_ERROR,