rename CFG_ENV_IS_IN_SPI_FLASH in CONFIG_ENV_IS_IN_SPI_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index bfd097f..85d7108 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -58,7 +58,7 @@
     !defined(CONFIG_ENV_IS_IN_DATAFLASH)	&& \
     !defined(CONFIG_ENV_IS_IN_NAND)	&& \
     !defined(CONFIG_ENV_IS_IN_ONENAND)	&& \
-    !defined(CFG_ENV_IS_IN_SPI_FLASH)	&& \
+    !defined(CONFIG_ENV_IS_IN_SPI_FLASH)	&& \
     !defined(CFG_ENV_IS_NOWHERE)
 # error Define one of CFG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|NOWHERE}
 #endif