test: Add tests for board uclass

Add tests for the new board uclass.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/drivers/board/sandbox.h b/drivers/board/sandbox.h
new file mode 100644
index 0000000..2cff494
--- /dev/null
+++ b/drivers/board/sandbox.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018
+ * Mario Six,  Guntermann & Drunck GmbH, mario.six@gdsys.cc
+ */
+
+enum {
+	BOOL_CALLED_DETECT,
+	INT_TEST1,
+	INT_TEST2,
+	STR_VACATIONSPOT,
+};