powerpc: mpc8568mds: Update board config

Enable DHCP command by default. Move environmental variable location
to before U-Boot image. Enlarge reserved mem for malloc. Update
maintainer.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/mpc8568mds/MAINTAINERS b/board/freescale/mpc8568mds/MAINTAINERS
index 379d8cc..56c5373 100644
--- a/board/freescale/mpc8568mds/MAINTAINERS
+++ b/board/freescale/mpc8568mds/MAINTAINERS
@@ -1,5 +1,5 @@
 MPC8568MDS BOARD
-#M:	-
+M:	York Sun <york.sun@nxp.com>
 S:	Maintained
 F:	board/freescale/mpc8568mds/
 F:	include/configs/MPC8568MDS.h