rename CFG_ENV_IS_IN_NAND in CONFIG_ENV_IS_IN_NAND

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/at91sam9261ek.h b/include/configs/at91sam9261ek.h
index 2929149..a4a0831 100644
--- a/include/configs/at91sam9261ek.h
+++ b/include/configs/at91sam9261ek.h
@@ -162,7 +162,7 @@
 #else /* CFG_USE_NANDFLASH */
 
 /* bootstrap + u-boot + env + linux in nandflash */
-#define CFG_ENV_IS_IN_NAND	1
+#define CONFIG_ENV_IS_IN_NAND	1
 #define CFG_ENV_OFFSET		0x60000
 #define CFG_ENV_OFFSET_REDUND	0x80000
 #define CFG_ENV_SIZE		0x20000		/* 1 sector = 128 kB */