wget: factor out progress bar code

Signed-off-by: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/Kbuild b/libbb/Kbuild
index c3c02b3..d9d5ad7 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -76,6 +76,7 @@
 lib-y += print_flags.o
 lib-y += process_escape_sequence.o
 lib-y += procps.o
+lib-y += progress.o
 lib-y += ptr_to_globals.o
 lib-y += read.o
 lib-y += read_key.o