rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/linkstation.h b/include/configs/linkstation.h
index e5a0fb9..01ae317 100644
--- a/include/configs/linkstation.h
+++ b/include/configs/linkstation.h
@@ -449,7 +449,7 @@
 #define CFG_FLASH_EMPTY_INFO		/* print 'E' for empty sector on flinfo */
 #define CFG_FLASH_QUIET_TEST	1	/* don't warn upon unknown flash	*/
 
-#define CFG_ENV_IS_IN_FLASH
+#define CONFIG_ENV_IS_IN_FLASH
 /*
  * The original LinkStation flash organisation uses
  * 448 kB (0xFFF00000 - 0xFFF6FFFF) for the boot loader