[U-Boot] [PATCH v3 34/72] sandbox: Add a new sandbox_flattree board

[sjg at google.com]

Add a sandbox board to test the non-livetree build (i.e. with
CONFIG_OF_FLAT disabled). This increases our build and test coverage.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v3: None
Changes in v2: None

 board/sandbox/MAINTAINERS          |   7 ++
 configs/sandbox_flattree_defconfig | 179 +++++++++++++++++++++++++++++++++++++
 2 files changed, 186 insertions(+)
 create mode 100644 configs/sandbox_flattree_defconfig

Applied to u-boot-dm