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/env_common.c b/common/env_common.c
index e89f192..36c46f0 100644
--- a/common/env_common.c
+++ b/common/env_common.c
@@ -134,7 +134,7 @@
 };
 
 #if defined(CONFIG_ENV_IS_IN_NAND)		/* Environment is in Nand Flash */ \
-	|| defined(CFG_ENV_IS_IN_SPI_FLASH)
+	|| defined(CONFIG_ENV_IS_IN_SPI_FLASH)
 int default_environment_size = sizeof(default_environment);
 #endif