xsigo: send nack codes

xsigo: send nack codes

Orabug: 24442792

Sometime uVNIC removal on OFOS won't trigger a actual removal
of Vstar interface, in that case uVNIC driver has to send NACK
code so that XCM will start cleaning its database.

Added additional codes as per XCM specification

Reported-by: jie zhu <jie.x.zhu@oracle.com>
Signed-off-by: Pradeep Gopanapalli <pradeep.gopanapalli@oracle.com>
Reviewed-by: Qingjun Wang <qingjun.wang@oracle.com>
Reviewed-by: Manish Kumar Singh <mk.singh@oracle.com>
Reviewed-by: UmaShankar Tumari Mahabalagiri <umashankar.mahabalagiri@oracle.com>