When the page size is not 4KB, the FW must be programmed to work with
the right SGE boundaries and fragment list length.

To avoid confusion with the BCM_PAGE_SIZE which is set to 4KB for the
FW sake, another alias for the system page size was added to
explicitly indicate that it is meant for the SGE
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>