drivers/net/: Use the DMA_{64,32}BIT_MASK constants

Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
pci_set_dma_mask() or pci_set_consistent_dma_mask()

This patch includes dma-mapping.h explicitly because it caused errors
on some architectures otherwise.

See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
diff --git a/drivers/net/tokenring/lanstreamer.c b/drivers/net/tokenring/lanstreamer.c
index 99e0b03..6e5ade9 100644
--- a/drivers/net/tokenring/lanstreamer.c
+++ b/drivers/net/tokenring/lanstreamer.c
@@ -118,6 +118,7 @@
 #include <linux/stddef.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
 #include <linux/version.h>
 #include <linux/bitops.h>
@@ -257,7 +258,7 @@
 #endif
 #endif
 
-	rc = pci_set_dma_mask(pdev, 0xFFFFFFFFULL);
+	rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 	if (rc) {
 		printk(KERN_ERR "%s: No suitable PCI mapping available.\n",
 				dev->name);