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/poleg.h b/include/configs/poleg.h
index 075729e..c3f1d33 100644
--- a/include/configs/poleg.h
+++ b/include/configs/poleg.h
@@ -14,7 +14,7 @@
 #define CFG_SYS_SDRAM_BASE           0x0
 
 /* Default environemnt variables */
-#define CONFIG_EXTRA_ENV_SETTINGS   "uimage_flash_addr=80200000\0"   \
+#define CFG_EXTRA_ENV_SETTINGS   "uimage_flash_addr=80200000\0"   \
 		"stdin=serial\0"   \
 		"stdout=serial\0"   \
 		"stderr=serial\0"    \