netxen: fix warning in ioaddr for NX3031 chip

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>

crb_intr_mask/crb_sts_consumer is predefined for NX2031 not for
NX3031. For NX3031, these values get defined in rx context creation.
Signed-off-by: David S. Miller <davem@davemloft.net>