[U-Boot] [PATCH v2 17/37] binman: Ensure that coverage has access to site packages

[sjg at google.com]

Code coverage tests fail on binman due to dist-packages being dropped from
the python path on Ubuntu 16.04. Add them in so that we can find the
elffile module, which is required by binman.

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

Changes in v2: None

 tools/binman/binman.py | 8 ++++++++
 1 file changed, 8 insertions(+)

Applied to u-boot-dm, thanks!