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>
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 120e64c..4b460a6 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -51,7 +51,7 @@
  * @DMA_ERROR: transaction failed
  */
 enum dma_status {
-	DMA_SUCCESS = 0, DMA_COMPLETE = 0,
+	DMA_COMPLETE,
 	DMA_IN_PROGRESS,
 	DMA_PAUSED,
 	DMA_ERROR,