[ACPI] suspend/resume ACPI PCI Interrupt Links

Add reference count and disable ACPI PCI Interrupt Link
when no device still uses it.

Warn when drivers have not released Link at suspend time.

http://bugzilla.kernel.org/show_bug.cgi?id=3469

Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

arch/i386/pci/common.c

@@ -249,3 +249,9 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 
 	return pcibios_enable_irq(dev);
 }
+
+void pcibios_disable_device (struct pci_dev *dev)
+{
+	if (pcibios_disable_irq)
+		pcibios_disable_irq(dev);
+}