dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 3009e01..18d65fb 100644
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -545,7 +545,7 @@
 	 * BIOS SMI calls require buffer addresses be in 32-bit address space.
 	 * This is done by setting the DMA mask below.
 	 */
-	dcdbas_pdev->dev.coherent_dma_mask = DMA_32BIT_MASK;
+	dcdbas_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 	dcdbas_pdev->dev.dma_mask = &dcdbas_pdev->dev.coherent_dma_mask;
 
 	error = sysfs_create_group(&dev->dev.kobj, &dcdbas_attr_group);