mx53loco: Add myself as maintainer

I would like to help supporting this board, so add myself
as a maintainer.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
diff --git a/board/freescale/mx53loco/MAINTAINERS b/board/freescale/mx53loco/MAINTAINERS
index b4bd1a1..6c23751 100644
--- a/board/freescale/mx53loco/MAINTAINERS
+++ b/board/freescale/mx53loco/MAINTAINERS
@@ -1,4 +1,5 @@
 MX53LOCO BOARD
+M:	Fabio Estevam <festevam@gmail.com>
 M:	Jason Liu <jason.hui.liu@nxp.com>
 S:	Maintained
 F:	board/freescale/mx53loco/