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/amcc/sequoia/u-boot-nand.lds b/board/amcc/sequoia/u-boot-nand.lds
index ae2e18d..6608e65 100644
--- a/board/amcc/sequoia/u-boot-nand.lds
+++ b/board/amcc/sequoia/u-boot-nand.lds
@@ -57,7 +57,7 @@
 
     /* Align to next NAND block */
     . = ALIGN(0x4000);
-    common/environment.o  (.ppcenv)
+    common/env_embedded.o  (.ppcenv)
     /* Keep some space here for redundant env and potential bad env blocks */
     . = ALIGN(0x10000);