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/omap2420h4.h b/include/configs/omap2420h4.h
index afdcba4..461362f 100644
--- a/include/configs/omap2420h4.h
+++ b/include/configs/omap2420h4.h
@@ -270,7 +270,7 @@
 #define CFG_FLASH_BANKS_LIST	{ CFG_FLASH_BASE, CFG_FLASH_BASE + PHYS_FLASH_SIZE_1 }
 
 #ifdef CFG_NAND_BOOT
-#define CFG_ENV_IS_IN_NAND	1
+#define CONFIG_ENV_IS_IN_NAND	1
 #define CFG_ENV_OFFSET	0x80000	/* environment starts here  */
 #else
 #define CFG_ENV_ADDR             (CFG_FLASH_BASE + SZ_128K)