bnxt_en: Enable online self tests for multi-host/NPAR mode.

Online self tests are not disruptive and can be run in NPAR mode
and in multi-host NIC as well.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/1602493854-29283-3-git-send-email-michael.chan@broadcom.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>