bnxt_en: Add a new ethtool -W dump flag

bnxt_en: Add a new ethtool -W dump flag

Add a new ethtool -W dump flag (2) to include driver coredump segments.
This patch adds the host backing store context memory pages used by the
chip and FW to store various states to the coredump.  The pages for
each context memory type is dumped into a separate coredump segment.

Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Selvin Thyparampil Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Shruti Parab <shruti.parab@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20241115151438.550106-11-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>