board: amlogic: add support for AD401 board

The AD401 board is the Amlogic A1 SoC reference board

Signed-off-by: Igor Prusov <ivprusov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230505125639.3605-6-ivprusov@sberdevices.ru
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/board/amlogic/ad401/MAINTAINERS b/board/amlogic/ad401/MAINTAINERS
new file mode 100644
index 0000000..52a44bd
--- /dev/null
+++ b/board/amlogic/ad401/MAINTAINERS
@@ -0,0 +1,6 @@
+AD401
+M:	Neil Armstrong <neil.armstrong@linaro.org>
+S:	Maintained
+L:	u-boot-amlogic@groups.io
+F:	board/amlogic/ad401/
+F:	configs/ad401_defconfig