ath5k: Use pci_is_pcie()

Use function pci_is_pcie() instead of accessing struct member directly.

CC: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/attach.c

@@ -276,7 +276,7 @@ int ath5k_hw_init(struct ath5k_softc *sc)
 	/*
 	 * Write PCI-E power save settings
 	 */
-	if ((ah->ah_version == AR5K_AR5212) && pdev && (pdev->is_pcie)) {
+	if ((ah->ah_version == AR5K_AR5212) && pdev && (pci_is_pcie(pdev))) {
 		ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
 		ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);