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/mt7623.h b/include/configs/mt7623.h
index 93161bd..db12377 100644
--- a/include/configs/mt7623.h
+++ b/include/configs/mt7623.h
@@ -42,7 +42,7 @@
 #include <config_distro_bootcmd.h>
 
 /* Extra environment variables */
-#define CONFIG_EXTRA_ENV_SETTINGS	\
+#define CFG_EXTRA_ENV_SETTINGS	\
 	ENV_MEM_LAYOUT_SETTINGS		\
 	BOOTENV