global: Migrate CONFIG_EXTRA_ENV_SETTINGS to CFG

Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/dns325.h b/include/configs/dns325.h
index 1bfb741..4842ecc 100644
--- a/include/configs/dns325.h
+++ b/include/configs/dns325.h
@@ -28,7 +28,7 @@
  * Default environment variables
  */
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	"stdin=serial\0" \
 	"stdout=serial\0" \
 	"stderr=serial\0" \