rename environment.c in env_embedded.c to reflect is functionality

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/gen860t/u-boot-flashenv.lds b/board/gen860t/u-boot-flashenv.lds
index bb03d3a..8215a23 100644
--- a/board/gen860t/u-boot-flashenv.lds
+++ b/board/gen860t/u-boot-flashenv.lds
@@ -133,6 +133,6 @@
   .ppcenv:
   {
     . = env_offset;
-    common/environment.o
+    common/env_embedded.o
   }
 }