rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/atmel/at91sam9261ek/at91sam9261ek.c b/board/atmel/at91sam9261ek/at91sam9261ek.c
index 647aab5..76f56d6 100644
--- a/board/atmel/at91sam9261ek/at91sam9261ek.c
+++ b/board/atmel/at91sam9261ek/at91sam9261ek.c
@@ -92,9 +92,9 @@
 	at91_sys_write(AT91_SMC_MODE(3),
 		       AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
 		       AT91_SMC_EXNWMODE_DISABLE |
-#ifdef CFG_NAND_DBW_16
+#ifdef CONFIG_SYS_NAND_DBW_16
 		       AT91_SMC_DBW_16 |
-#else /* CFG_NAND_DBW_8 */
+#else /* CONFIG_SYS_NAND_DBW_8 */
 		       AT91_SMC_DBW_8 |
 #endif
 		       AT91_SMC_TDF_(2));