ACPICA: Update internal namespace node/handle interfaces

This change deletes the unnecessary acpi_ns_convert_entry_to_handle
interface and renames the acpi_ns_map_handle_to_node interface to
acpi_ns_validate_handle.  ACPICA BZ 798.

http://www.acpica.org/bugzilla/show_bug.cgi?id=798

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 2deb986..e37836e 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -180,7 +180,7 @@
 		return (AE_OK);
 	}
 
-	this_node = acpi_ns_map_handle_to_node(obj_handle);
+	this_node = acpi_ns_validate_handle(obj_handle);
 	if (!this_node) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid object handle %p\n",
 				  obj_handle));