rename CFG_ENV_IS_NOWHERE in CONFIG_ENV_IS_NOWHERE

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/lib_ppc/board.c b/lib_ppc/board.c
index a757ffd..cf6239f 100644
--- a/lib_ppc/board.c
+++ b/lib_ppc/board.c
@@ -651,7 +651,7 @@
 	bd_t *bd;
 	int i;
 	extern void malloc_bin_reloc (void);
-#ifndef CFG_ENV_IS_NOWHERE
+#ifndef CONFIG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
 #endif
 
@@ -713,7 +713,7 @@
 #endif
 	}
 	/* there are some other pointer constants we must deal with */
-#ifndef CFG_ENV_IS_NOWHERE
+#ifndef CONFIG_ENV_IS_NOWHERE
 	env_name_spec += gd->reloc_off;
 #endif