qlge: Fix page size ifdef test.

This ASIC does support all page sizes. For 4k and 8k page size the TX
control block needs an external scatter gather list.  For page sizes
larger than 8k the max frags is satisfied by the original TX control
block.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>