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/embestmx6boards.h b/include/configs/embestmx6boards.h
index 1742b11..c1748fc 100644
--- a/include/configs/embestmx6boards.h
+++ b/include/configs/embestmx6boards.h
@@ -76,7 +76,7 @@
 	CONSOLE_STDIN_SETTINGS \
 	CONSOLE_STDOUT_SETTINGS
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	CONSOLE_ENV_SETTINGS \
 	MEM_LAYOUT_ENV_SETTINGS \
 	"fdtfile=" FDTFILE "\0" \