FS-122: add mod_osp Makefile to configure generated Makefiles

configure.in

@@ -904,6 +904,7 @@ AC_CONFIG_FILES([Makefile
 		src/mod/applications/mod_expr/Makefile
 		src/mod/applications/mod_fax/Makefile
 		src/mod/applications/mod_spandsp/Makefile
+		src/mod/applications/mod_osp/Makefile
 		src/mod/applications/mod_stress/Makefile
 		src/mod/applications/mod_hash/Makefile
 		src/mod/endpoints/mod_portaudio/Makefile