bnx2x: Add MFW dump support

bnx2x: Add MFW dump support

Orabug: 22066196

Devices with up-to-date management FW will be able to store register dumps
on their persistent storage - in case management FW identifies a fatal
error it would gather and store such dumps, which could later be retrieved
using specific debug tools.

This patch adds the necessary part in the driver in order to make the
feature operational, as well as update users [under debug] during load
in case their device contains a dump of a previous crash.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit c48f350ff5e75abae2627c2531780264f9e49130)

Signed-off-by: Dan Duval <dan.duval@oracle.com>