rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index fc9b94e..f5b93df 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -54,7 +54,7 @@
 
 #if !defined(CONFIG_ENV_IS_IN_NVRAM)	&& \
     !defined(CONFIG_ENV_IS_IN_EEPROM)	&& \
-    !defined(CFG_ENV_IS_IN_FLASH)	&& \
+    !defined(CONFIG_ENV_IS_IN_FLASH)	&& \
     !defined(CONFIG_ENV_IS_IN_DATAFLASH)	&& \
     !defined(CONFIG_ENV_IS_IN_NAND)	&& \
     !defined(CONFIG_ENV_IS_IN_ONENAND)	&& \