octeontx2-pf: Dont allocate BPIDs for LBK interfaces

Current driver enables backpressure for LBK interfaces.
But these interfaces do not support this feature.
Hence, this patch fixes the issue by skipping the
backpressure configuration for these interfaces.

Fixes: 75f3627 ("octeontx2-pf: Support to enable/disable pause frames via ethtool").
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Link: https://lore.kernel.org/r/20230716093741.28063-1-gakula@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: Geetha sowjanya

drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c

@@ -1454,8 +1454,9 @@ static int otx2_init_hw_resources(struct otx2_nic *pf)
 	if (err)
 		goto err_free_npa_lf;
 
-	/* Enable backpressure */
-	otx2_nix_config_bp(pf, true);
+	/* Enable backpressure for CGX mapped PF/VFs */
+	if (!is_otx2_lbkvf(pf->pdev))
+		otx2_nix_config_bp(pf, true);
 
 	/* Init Auras and pools used by NIX RQ, for free buffer ptrs */
 	err = otx2_rq_aura_pool_init(pf);