dmaengine: dw: always export dw_dma_{en,dis}able

Instead of conditional exporing of dw_dma_suspend() / dw_dma_resume() let's
export dw_dma_disable() / dw_dma_enable(). Since dw_dma_shutdown() repeats
dw_dma_disable() we may safely remove it at all.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index d50077e..a630161 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -226,7 +226,7 @@
 {
 	struct dw_dma_chip *chip = platform_get_drvdata(pdev);
 
-	dw_dma_shutdown(chip);
+	dw_dma_disable(chip);
 	clk_disable_unprepare(chip->clk);
 }
 
@@ -253,7 +253,7 @@
 	struct platform_device *pdev = to_platform_device(dev);
 	struct dw_dma_chip *chip = platform_get_drvdata(pdev);
 
-	dw_dma_suspend(chip);
+	dw_dma_disable(chip);
 	clk_disable_unprepare(chip->clk);
 
 	return 0;
@@ -265,7 +265,7 @@
 	struct dw_dma_chip *chip = platform_get_drvdata(pdev);
 
 	clk_prepare_enable(chip->clk);
-	return dw_dma_resume(chip);
+	return dw_dma_enable(chip);
 }
 
 #endif /* CONFIG_PM_SLEEP */
@@ -277,7 +277,7 @@
 static struct platform_driver dw_driver = {
 	.probe		= dw_probe,
 	.remove		= dw_remove,
-	.shutdown	= dw_shutdown,
+	.shutdown       = dw_shutdown,
 	.driver = {
 		.name	= "dw_dmac",
 		.pm	= &dw_dev_pm_ops,