bnx2: use pdev->pm_cap instead of pci_find_capability(.., PCI_CAP_ID_PM)

Pci core has been saved pm cap register offset by pdev->pm_cap in pci_pm_init()
in init path. So we can use pdev->pm_cap instead of using
pci_find_capability(pdev, PCI_CAP_ID_PM) for better performance and simplified code.

Signed-off-by: Yijing Wang <[email protected]>
Cc: Michael Chan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: David S. Miller <[email protected]>

Author: YijingWang

drivers/net/ethernet/broadcom/bnx2.c

@@ -8104,7 +8104,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 
 	pci_set_master(pdev);
 
-	bp->pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
+	bp->pm_cap = pdev->pm_cap;
 	if (bp->pm_cap == 0) {
 		dev_err(&pdev->dev,
 			"Cannot find power management capability, aborting\n");