dma: Remove erroneous __exit and __exit_p() references

Removing the annotation with __exit and referencing with __exit_p()
present in dma driver module remove hooks.

Part of the __devexit and __devexit_p() purge.

Signed-off-by: Maxin B. John <maxin.john@enea.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 70b8975..7d08ab7 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -1145,7 +1145,7 @@
 	return ret;
 }
 
-static int __exit imxdma_remove(struct platform_device *pdev)
+static int imxdma_remove(struct platform_device *pdev)
 {
 	struct imxdma_engine *imxdma = platform_get_drvdata(pdev);
 
@@ -1162,7 +1162,7 @@
 		.name	= "imx-dma",
 	},
 	.id_table	= imx_dma_devtype,
-	.remove		= __exit_p(imxdma_remove),
+	.remove		= imxdma_remove,
 };
 
 static int __init imxdma_module_init(void)