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/hymod/u-boot.lds b/board/hymod/u-boot.lds
index cb7b4ea..2b7e54b 100644
--- a/board/hymod/u-boot.lds
+++ b/board/hymod/u-boot.lds
@@ -65,7 +65,7 @@
 
     . = env_offset;
 */
-    common/environment.o(.text)
+    common/env_embedded.o(.text)
 
     *(.text)
     *(.fixup)
@@ -140,7 +140,7 @@
   . = ALIGN(256 * 1024);
   .ppcenv	:
   {
-    common/environment.o (.ppcenv)
+    common/env_embedded.o (.ppcenv)
   }
   _end = . ;
   PROVIDE (end = .);