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/e100.c b/drivers/net/e100.c
index 4a47df5..cfaa6b2 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -143,6 +143,7 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/dma-mapping.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/mii.h>
@@ -2286,7 +2287,7 @@
 		goto err_out_disable_pdev;
 	}
 
-	if((err = pci_set_dma_mask(pdev, 0xFFFFFFFFULL))) {
+	if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
 		DPRINTK(PROBE, ERR, "No usable DMA configuration, aborting.\n");
 		goto err_out_free_res;
 	}