bnx2x: Use pci_ari_enabled() instead of local copy

Use pci_ari_enabled() from the PCI core instead of the identical local copy
bnx2x_ari_enabled().  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
index 9ca994d..3591077 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
@@ -1074,11 +1074,6 @@
 	}
 }
 
-static int bnx2x_ari_enabled(struct pci_dev *dev)
-{
-	return dev->bus->self && dev->bus->self->ari_enabled;
-}
-
 static int
 bnx2x_get_vf_igu_cam_info(struct bnx2x *bp)
 {
@@ -1212,7 +1207,7 @@
 
 	err = -EIO;
 	/* verify ari is enabled */
-	if (!bnx2x_ari_enabled(bp->pdev)) {
+	if (!pci_ari_enabled(bp->pdev->bus)) {
 		BNX2X_ERR("ARI not supported (check pci bridge ARI forwarding), SRIOV can not be enabled\n");
 		return 0;
 	}