ACPICA: Add post-order callback to acpi_walk_namespace

The existing interface only has a pre-order callback. This change
adds an additional parameter for a post-order callback which will
be more useful for bus scans. ACPICA BZ 779.

Also update the external calls to acpi_walk_namespace.

http://www.acpica.org/bugzilla/show_bug.cgi?id=779

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7338b6a..30be3c1 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -1030,8 +1030,8 @@
 
 	/* Find dependent devices */
 	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-			    ACPI_UINT32_MAX, find_dock_devices, dock_station,
-			    NULL);
+			    ACPI_UINT32_MAX, find_dock_devices, NULL,
+			    dock_station, NULL);
 
 	/* add the dock station as a device dependent on itself */
 	dd = alloc_dock_dependent_device(handle);
@@ -1127,11 +1127,11 @@
 
 	/* look for a dock station */
 	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-			    ACPI_UINT32_MAX, find_dock, NULL, NULL);
+			    ACPI_UINT32_MAX, find_dock, NULL, NULL, NULL);
 
 	/* look for bay */
 	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-			ACPI_UINT32_MAX, find_bay, NULL, NULL);
+			ACPI_UINT32_MAX, find_bay, NULL, NULL, NULL);
 	if (!dock_station_count) {
 		printk(KERN_INFO PREFIX "No dock devices found.\n");
 		return 0;