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>

arch/arm/mach-omap2/usb-musb.c

@@ -131,14 +131,14 @@ static struct musb_hdrc_platform_data musb_plat = {
 	.power		= 50,			/* up to 100 mA */
 };
 
-static u64 musb_dmamask = DMA_32BIT_MASK;
+static u64 musb_dmamask = DMA_BIT_MASK(32);
 
 static struct platform_device musb_device = {
 	.name		= "musb_hdrc",
 	.id		= -1,
 	.dev = {
 		.dma_mask		= &musb_dmamask,
-		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
 		.platform_data		= &musb_plat,
 	},
 	.num_resources	= ARRAY_SIZE(musb_resources),
@@ -146,14 +146,14 @@ static struct platform_device musb_device = {
 };
 
 #ifdef CONFIG_NOP_USB_XCEIV
-static u64 nop_xceiv_dmamask = DMA_32BIT_MASK;
+static u64 nop_xceiv_dmamask = DMA_BIT_MASK(32);
 
 static struct platform_device nop_xceiv_device = {
 	.name		= "nop_usb_xceiv",
 	.id		= -1,
 	.dev = {
 		.dma_mask		= &nop_xceiv_dmamask,
-		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
 		.platform_data		= NULL,
 	},
 };

arch/ia64/kernel/pci-swiotlb.c

@@ -16,7 +16,7 @@ EXPORT_SYMBOL(swiotlb);
 static void *ia64_swiotlb_alloc_coherent(struct device *dev, size_t size,
 					 dma_addr_t *dma_handle, gfp_t gfp)
 {
-	if (dev->coherent_dma_mask != DMA_64BIT_MASK)
+	if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
 		gfp |= GFP_DMA;
 	return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
 }