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/mt8516.h b/include/configs/mt8516.h
index 0f7981a..73776e3 100644
--- a/include/configs/mt8516.h
+++ b/include/configs/mt8516.h
@@ -21,7 +21,7 @@
 #define BOOT_TARGET_DEVICES(func) \
 	func(MMC, mmc, 0)
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	"scriptaddr=0x40000000\0" \
 	BOOTENV