acpi: Support generation of a scope

Add a function to write a scope to the generated ACPI code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: Fix build failures on Sandbox]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/test/dm/acpi.h b/test/dm/acpi.h
index 885dff8..535db56 100644
--- a/test/dm/acpi.h
+++ b/test/dm/acpi.h
@@ -9,6 +9,9 @@
 #ifndef __TEST_DM_ACPI_H
 #define __TEST_DM_ACPI_H
 
+#define ACPI_TEST_DEV_NAME	"ABCD"
+#define ACPI_TEST_CHILD_NAME	"EFGH"
+
 /**
  * acpi_test_alloc_context_size() - Allocate an ACPI context of a given size
  *