8xx: add support for new keymile kmsupx4 board.

This patch adds support for the kmsupx4 board from Keymile,
based on a Freescale MPC852T CPU

- serial console on SMC1
- 32 MB SDRAM
- 32 MB NOR Flash
- Ethernet over SCC3
- I2C Bitbang

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index c3157d9..ce25c1b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -380,6 +380,7 @@
 	ids8247		MPC8247
 	jupiter		MPC5200
 	kmeter1		MPC8360
+	kmsupx4		MPC852T
 	mgcoge		MPC8247
 	mgsuvd		MPC852
 	mucmc52		MPC5200