rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/nand_spl/board/amcc/canyonlands/ddr2_fixed.c b/nand_spl/board/amcc/canyonlands/ddr2_fixed.c
index 29d7d3f..371bbb3 100644
--- a/nand_spl/board/amcc/canyonlands/ddr2_fixed.c
+++ b/nand_spl/board/amcc/canyonlands/ddr2_fixed.c
@@ -94,5 +94,5 @@
 	mtsdram(SDRAM_RQDC, 0x80000038);
 	mtsdram(SDRAM_RFDC, 0x00000257);
 
-	return CFG_MBYTES_SDRAM << 20;
+	return CONFIG_SYS_MBYTES_SDRAM << 20;
 }