Makefile: rename all libraries to built-in.o

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/include/configs/bf537-pnav.h b/include/configs/bf537-pnav.h
index 62bd3bf..3aa3d50 100644
--- a/include/configs/bf537-pnav.h
+++ b/include/configs/bf537-pnav.h
@@ -111,8 +111,8 @@
  * it linked after the configuration sector.
  */
 # define LDS_BOARD_TEXT \
-	arch/blackfin/lib/libblackfin.o (.text*); \
-	arch/blackfin/cpu/libblackfin.o (.text*); \
+	arch/blackfin/lib/built-in.o (.text*); \
+	arch/blackfin/cpu/built-in.o (.text*); \
 	. = DEFINED(env_offset) ? env_offset : .; \
 	common/env_embedded.o (.text*);
 #endif