rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/freescale/m5272c3/m5272c3.c b/board/freescale/m5272c3/m5272c3.c
index d17cb2e..902ca3a 100644
--- a/board/freescale/m5272c3/m5272c3.c
+++ b/board/freescale/m5272c3/m5272c3.c
@@ -40,7 +40,7 @@
 	/* Dummy write to start SDRAM */
 	*((volatile unsigned long *)0) = 0;
 
-	return CFG_SDRAM_SIZE * 1024 * 1024;
+	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 	};
 
 int testdram (void) {