rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/cmd_log.c b/common/cmd_log.c
index fdcc575..febdb90 100644
--- a/common/cmd_log.c
+++ b/common/cmd_log.c
@@ -68,7 +68,7 @@
 
 unsigned long __logbuffer_base(void)
 {
-	return CFG_SDRAM_BASE + gd->bd->bi_memsize - LOGBUFF_LEN;
+	return CONFIG_SYS_SDRAM_BASE + gd->bd->bi_memsize - LOGBUFF_LEN;
 }
 unsigned long logbuffer_base (void) __attribute__((weak, alias("__logbuffer_base")));