rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/apollon/lowlevel_init.S b/board/apollon/lowlevel_init.S
index 8381fea..64550f6 100644
--- a/board/apollon/lowlevel_init.S
+++ b/board/apollon/lowlevel_init.S
@@ -51,7 +51,7 @@
 .globl lowlevel_init
 lowlevel_init:
 
-#ifdef CFG_NOR_BOOT
+#ifdef CONFIG_SYS_NOR_BOOT
 	/* Check running in SDRAM */
 	mov	r0, pc, lsr #28
 	cmp	r0, #8