Update aristainetos board to Kconfig

aristainetos board was merged in u-boot-imx before
Kconfig was integrated, but it is not yet
mainline.

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/board/aristainetos/MAINTAINERS b/board/aristainetos/MAINTAINERS
new file mode 100644
index 0000000..d45d423
--- /dev/null
+++ b/board/aristainetos/MAINTAINERS
@@ -0,0 +1,6 @@
+ARISTAINETOS BOARD
+M:	Heiko Schocher <hs@denx.de>
+S:	Maintained
+F:	board/aristainetos/
+F:	include/configs/aristainetos.h
+F:	configs/aristainetos_defconfig