Makefile: rename all libraries to built-in.o

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/board/genietv/u-boot.lds b/board/genietv/u-boot.lds
index e217f06..70ab702 100644
--- a/board/genietv/u-boot.lds
+++ b/board/genietv/u-boot.lds
@@ -18,11 +18,11 @@
 
     arch/powerpc/cpu/mpc8xx/start.o	(.text*)
     arch/powerpc/cpu/mpc8xx/traps.o	(.text*)
-    lib/libgeneric.o			(.text*)
-    net/libnet.o			(.text*)
-    arch/powerpc/cpu/mpc8xx/libmpc8xx.o	(.text*)
-    board/genietv/libgenietv.o		(.text*)
-    arch/powerpc/lib/libpowerpc.o	(.text*)
+    lib/built-in.o			(.text*)
+    net/built-in.o			(.text*)
+    arch/powerpc/cpu/mpc8xx/built-in.o	(.text*)
+    board/genietv/built-in.o		(.text*)
+    arch/powerpc/lib/built-in.o		(.text*)
     *(.text.do_load_serial*)
     *(.text.do_mem_*)
     *(.text.do_bootm*)