[PATCH 12/49] concurrencytest: Fix Python3 warning

[Simon Glass]

This gives a warning in some situations:

  File "tools/dtoc/../concurrencytest/concurrencytest.py", line 95,
       in do_fork
    stream = os.fdopen(c2pread, 'rb', 1)
  File "/usr/lib/python3.8/os.py", line 1023, in fdopen
    return io.open(fd, *args, **kwargs)
RuntimeWarning: line buffering (buffering=1) isn't supported in binary
    mode, the default buffer size will be used

Fix this by dropping the line-buffer parameter.

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

 tools/concurrencytest/concurrencytest.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Applied to u-boot-dm/next, thanks!