siemens,am33x,rastaban: add rastaban config

rastaban is a draco version with more flash, more RAM
and faster CPU. Number of partitions is the same but
rootfs partition is different.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/siemens/draco/MAINTAINERS b/board/siemens/draco/MAINTAINERS
index f6b68ca..6d9544a 100644
--- a/board/siemens/draco/MAINTAINERS
+++ b/board/siemens/draco/MAINTAINERS
@@ -6,3 +6,5 @@
 F:	configs/draco_defconfig
 F:	include/configs/dxr2.h
 F:	configs/dxr2_defconfig
+F:	include/configs/rastaban.h
+F:	configs/rastaban_defconfig