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/bf533-stamp/u-boot.lds.S b/board/bf533-stamp/u-boot.lds.S
index 01780c5..4e7fd7c 100644
--- a/board/bf533-stamp/u-boot.lds.S
+++ b/board/bf533-stamp/u-boot.lds.S
@@ -69,7 +69,7 @@
 		lib_generic/crc32.o		(.text)
 
 		. = DEFINED(env_offset) ? env_offset : .;
-		common/environment.o	(.text)
+		common/env_embedded.o	(.text)
 #endif
 
 		*(.text .text.*)