ACPI: drivers/acpi/scan.c: make acpi_bus_type static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 401e723..861ac37 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1433,7 +1433,7 @@
 }
 
 
-struct bus_type acpi_bus_type = {
+static struct bus_type acpi_bus_type = {
 	.name		= "acpi",
 	.suspend	= acpi_device_suspend,
 	.resume		= acpi_device_resume,