rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/esd/canbt/flash.c b/board/esd/canbt/flash.c
index de847f9..56c822e 100644
--- a/board/esd/canbt/flash.c
+++ b/board/esd/canbt/flash.c
@@ -47,7 +47,7 @@
 	unsigned long base_b0;
 
 	/* Init: no FLASHes known */
-	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
+	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
 		flash_info[i].flash_id = FLASH_UNKNOWN;
 	}