Remove unnecessary offsetof calulations on these structures:
netxen_board_info, netxen_user_old_info, netxen_new_user_info.

The offsets into the flash are fixed, don't need to be calculated.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>