net/bnxt: initialize parent PF information

net/bnxt: initialize parent PF information

Add support to query parent PF information (MAC address,
function ID, port ID and default VNIC) from firmware.

Current firmware returns zero for parent default vnic,
a temporary Wh+-specific workaround is included until
that can be fixed.

Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>