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/dockstar.h b/include/configs/dockstar.h
index a6c1e9c..9993891 100644
--- a/include/configs/dockstar.h
+++ b/include/configs/dockstar.h
@@ -22,7 +22,7 @@
  * Default environment variables
  */
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	"console=console=ttyS0,115200\0" \
 	"kernel=/boot/uImage\0" \
 	"initrd=/boot/uInitrd\0" \