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/fads/u-boot.lds b/board/fads/u-boot.lds
index c7571e4..8e408a6 100644
--- a/board/fads/u-boot.lds
+++ b/board/fads/u-boot.lds
@@ -53,7 +53,7 @@
     cpu/mpc8xx/start.o		(.text)
 
     /*. = DEFINED(env_offset) ? env_offset : .;*/
-    common/environment.o	(.ppcenv)
+    common/env_embedded.o	(.ppcenv)
 
     *(.text)
     *(.fixup)