iwlagn: move PCI power related functions to the PCI layer

Continue to popule the PCI layer and the iwl_bus_ops with the power related
stuff.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.h b/drivers/net/wireless/iwlwifi/iwl-power.h
index 59635d7..5f7b720 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.h
+++ b/drivers/net/wireless/iwlwifi/iwl-power.h
@@ -43,7 +43,7 @@
 	struct iwl_powertable_cmd sleep_cmd;
 	struct iwl_powertable_cmd sleep_cmd_next;
 	int debug_sleep_level_override;
-	bool pci_pm;
+	bool bus_pm;
 };
 
 int iwl_power_set_mode(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd,