[PATCH] typhoon.c missing include

DMA_32BIT_MASK is declared in linux/dma-mapping.h; not all platforms get
it from already included headers, so we need explicit include here (fixes
breakage at least on alpha and sparc64).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>

drivers/net/typhoon.c

@@ -114,6 +114,7 @@ static const int multicast_filter_limit = 32;
 #include <linux/in6.h>
 #include <asm/checksum.h>
 #include <linux/version.h>
+#include <linux/dma-mapping.h>
 
 #include "typhoon.h"
 #include "typhoon-firmware.h"