bnx2x: fix a power state test

If PCIe supports PM capabilities, bnx2x will always claim eeprom is accessible
as PCI_D0 is zero.

Reported-by: Dan Carpenter <[e-mail]>
Signed-off-by: Yuval Mintz <[e-mail]>
Signed-off-by: Ariel Elior <[e-mail]>
Signed-off-by: Eilon Greenstein <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c

···
 		rc = pci_read_config_word(bp->pdev,
 					  bp->pm_cap + PCI_PM_CTRL, &pm);
 
-	if ((rc && !netif_running(dev)) || (!rc && ((pm & PCI_D0) != PCI_D0)))
+	if ((rc && !netif_running(dev)) ||
+	    (!rc && ((pm & PCI_PM_CTRL_STATE_MASK) != PCI_D0)))
 		return false;
 
 	return true;