atl1c: Use PCI Express Capability accessors

Use PCI Express Capability access functions to simplify atl1c driver.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 1bf5bbfe..8892e2b 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -149,7 +149,7 @@
 	data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP);
 	pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data);
 	/* clear error status */
-	pci_write_config_word(pdev, pci_pcie_cap(pdev) + PCI_EXP_DEVSTA,
+	pcie_capability_write_word(pdev, PCI_EXP_DEVSTA,
 			PCI_EXP_DEVSTA_NFED |
 			PCI_EXP_DEVSTA_FED |
 			PCI_EXP_DEVSTA_CED |