[PATCH v4 68/83] buildman: Convert config_out to string IO

[Simon Glass]

This is probably a little more efficient and it allows passing the object
to another function to write data. Convert config_out to use a string I/O
device.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 tools/buildman/builderthread.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Applied to u-boot-dm, thanks!