qlge: Add basic firmware dump.

Adding the infrstructure and basic data for the firmware
core dump.
The firmware coredump is turned OFF by default.  There will be no
memory allocations for data dumps to the log.

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