sandbox: Create a new sandbox_noinst build

Move sandbox_spl over to use OF_PLATDATA_INST. Create a new board to
test the case when this is not enabled, since we will be keeping that
code around for several months and want to avoid regressions.

Skip the dm_test_of_plat_dev() test since driver info is not available
for OF_PLATDATA_INST.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/sandbox/MAINTAINERS b/board/sandbox/MAINTAINERS
index 433be48..d32561c 100644
--- a/board/sandbox/MAINTAINERS
+++ b/board/sandbox/MAINTAINERS
@@ -20,6 +20,13 @@
 F:	include/configs/sandbox_spl.h
 F:	configs/sandbox_spl_defconfig
 
+SANDBOX NOINST BOARD
+M:	Simon Glass <sjg@chromium.org>
+S:	Maintained
+F:	board/sandbox/
+F:	include/configs/sandbox_spl.h
+F:	configs/sandbox_noinst_defconfig
+
 SANDBOX FLAT TREE BOARD
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained