PCI: Remove unnecessary __ref annotations

Some PCI functions used to be marked __devinit.  When CONFIG_HOTPLUG was
not set, these functions were discarded after boot.  A few callers of these
__devinit functions were marked __ref to indicate that they could safely
call the __devinit functions even though the callers were not __devinit.

But CONFIG_HOTPLUG and __devinit are now gone, and the need for the __ref
annotations is also gone, so remove them.  Relevant historical commits:

  54b956b903 Remove __dev* markings from init.h
  a8e4b9c101 PCI: add generic pci_hp_add_bridge()
  0ab2b57f8d PCI: fix section mismatch warning in pci_scan_child_bus
  451124a7cc PCI: fix 4x section mismatch warnings

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/hotplug/acpiphp_glue.c

@@ -500,7 +500,7 @@ static int acpiphp_rescan_slot(struct acpiphp_slot *slot)
  * This function should be called per *physical slot*,
  * not per each slot object in ACPI namespace.
  */
-static void __ref enable_slot(struct acpiphp_slot *slot)
+static void enable_slot(struct acpiphp_slot *slot)
 {
 	struct pci_dev *dev;
 	struct pci_bus *bus = slot->bus;

drivers/pci/hotplug/cpci_hotplug_pci.c

@@ -250,7 +250,7 @@ int cpci_led_off(struct slot* slot)
  * Device configuration functions
  */
 
-int __ref cpci_configure_slot(struct slot *slot)
+int cpci_configure_slot(struct slot *slot)
 {
 	struct pci_dev *dev;
 	struct pci_bus *parent;

drivers/pci/hotplug/shpchp_pci.c

@@ -34,7 +34,7 @@
 #include "../pci.h"
 #include "shpchp.h"
 
-int __ref shpchp_configure_device(struct slot *p_slot)
+int shpchp_configure_device(struct slot *p_slot)
 {
 	struct pci_dev *dev;
 	struct controller *ctrl = p_slot->ctrl;