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/alt.h b/include/configs/alt.h
index f277400..29f4d06 100644
--- a/include/configs/alt.h
+++ b/include/configs/alt.h
@@ -30,7 +30,7 @@
 
 /* Board Clock */
 
-#define CONFIG_EXTRA_ENV_SETTINGS	\
+#define CFG_EXTRA_ENV_SETTINGS	\
 	"bootm_size=0x10000000\0"	\
 	"usb_pgood_delay=2000\0"