MX53: support for freescale MX53LOCO board

This patch add initial support for freescale MX53LOCO board.
Network(FEC),SD/MMC,UART have been supported by this patch

Signed-off-by: Jason Liu <jason.hui@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index e2c48a8..ff43a9a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -574,6 +574,7 @@
 Jason Liu <r64343@freescale.com>
 
 	mx53evk         i.MX53
+	mx53loco        i.MX53
 
 Enric Balletbo i Serra <eballetbo@iseebcn.com>