Add MD5 support to the new uImage format

Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
diff --git a/Makefile b/Makefile
index c56518f..3bb8a74 100644
--- a/Makefile
+++ b/Makefile
@@ -2873,7 +2873,7 @@
 	@rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS \
 		$(obj)cscope.* $(obj)*.*~
 	@rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL)
-	@rm -f $(obj)tools/{crc32.c,environment.c,env/crc32.c,sha1.c,inca-swap-bytes}
+	@rm -f $(obj)tools/{crc32.c,environment.c,env/crc32.c,md5.c,sha1.c,inca-swap-bytes}
 	@rm -f $(obj)tools/{image.c,fdt.c,fdt_ro.c,fdt_rw.c,fdt_strerror.c}
 	@rm -f $(obj)tools/{fdt_wip.c,libfdt_internal.h}
 	@rm -f $(obj)cpu/mpc824x/bedbug_603e.c