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/highbank.h b/include/configs/highbank.h
index 4aef0b4..76e6054 100644
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -16,7 +16,7 @@
 
 #define CFG_SYS_SDRAM_BASE		0x00000000
 
-#define CONFIG_EXTRA_ENV_SETTINGS				\
+#define CFG_EXTRA_ENV_SETTINGS				\
 	"fdt_high=0x20000000\0"					\
 	"initrd_high=0x20000000\0"