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/eric/u-boot.lds b/board/eric/u-boot.lds
index 00e35a6..153e71f 100644
--- a/board/eric/u-boot.lds
+++ b/board/eric/u-boot.lds
@@ -75,7 +75,7 @@
     lib_generic/zlib.o		(.text)
 
 /*    . = env_offset;*/
-    common/environment.o(.text)
+    common/env_embedded.o(.text)
 
     *(.text)
     *(.fixup)