imx6: aristainetos: add aristainetos 2b csl

add aristainetso board version CSL.

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/board/aristainetos/Kconfig b/board/aristainetos/Kconfig
index 2e1d84d..9eb3c3b 100644
--- a/board/aristainetos/Kconfig
+++ b/board/aristainetos/Kconfig
@@ -21,3 +21,15 @@
 	default 3
 
 endif
+
+if TARGET_ARISTAINETOS2BCSL
+
+source "board/aristainetos/common/Kconfig"
+
+config SYS_BOARD
+	default "aristainetos"
+
+config SYS_BOARD_VERSION
+	default 4
+
+endif