[ATM]: [he] Use the DMA_32BIT_MASK constant from dma-mapping.h

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/atm/he.h

@@ -380,8 +380,6 @@ struct he_vcc
 #define PCI_VENDOR_ID_FORE	0x1127
 #define PCI_DEVICE_ID_FORE_HE	0x400
 
-#define HE_DMA_MASK		0xffffffff
-
 #define GEN_CNTL_0				0x40
 #define  INT_PROC_ENBL		(1<<25)
 #define  SLAVE_ENDIAN_MODE	(1<<16)