Add initial support for Freescale mx51evk board

The patch adds initial support for the Freescale mx51evk board.
Network (FEC) and SD controller (fsl_esdhc) are supported.

Signed-off-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Fred Fan <fanyefeng@gmail.com>
diff --git a/MAKEALL b/MAKEALL
index 6ddf7e0..a800310 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -633,6 +633,7 @@
 #########################################################################
 LIST_ARM_CORTEX_A8="		\
 	devkit8000		\
+	mx51evk			\
 	omap3_beagle		\
 	omap3_overo		\
 	omap3_evm		\