octeontx2-pf: Avoid adding dcbnl_ops for LBK and SDP vf

Priority flow control is not supported for LBK and SDP vf. This patch
adds support to not add dcbnl_ops for LBK and SDP vf.

Fixes: 8e67558177 ("octeontx2-pf: PFC config support with DCBx")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250519072658.2960851-1-sumang@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c

@@ -729,9 +729,12 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 #ifdef CONFIG_DCB
-	err = otx2_dcbnl_set_ops(netdev);
-	if (err)
-		goto err_free_zc_bmap;
+	/* Priority flow control is not supported for LBK and SDP vf(s) */
+	if (!(is_otx2_lbkvf(vf->pdev) || is_otx2_sdp_rep(vf->pdev))) {
+		err = otx2_dcbnl_set_ops(netdev);
+		if (err)
+			goto err_free_zc_bmap;
+	}
 #endif
 	otx2_qos_init(vf, qos_txqs);