Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n)

This is the second go through of the old DMA_nBIT_MASK macro,and there're not
so many of them left,so I put them into one patch.I hope this is the last round.
After this the definition of the old DMA_nBIT_MASK macro could be removed.

Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Greg KH <greg@kroah.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/net/wireless/ath9k/pci.c b/drivers/net/wireless/ath9k/pci.c
index 6dbc585..168411d 100644
--- a/drivers/net/wireless/ath9k/pci.c
+++ b/drivers/net/wireless/ath9k/pci.c
@@ -93,14 +93,14 @@
 	if (pci_enable_device(pdev))
 		return -EIO;
 
-	ret =  pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+	ret =  pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 
 	if (ret) {
 		printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
 		goto bad;
 	}
 
-	ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 
 	if (ret) {
 		printk(KERN_ERR "ath9k: 32-bit DMA consistent "