[U-Boot] [PATCH v2 30/37] binman: Allow preserving test directories

[sjg at google.com]

Sometimes when debugging tests it is useful to keep the input and output
directories so they can be examined later. Add an option for this and
update the binman tests to support it. This affects both the test class
and the tearDown() function called after each test.

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

Changes in v2: None

 tools/binman/README     |  8 ++++++++
 tools/binman/binman.py  | 16 +++++++++++++---
 tools/binman/cmdline.py |  4 ++++
 tools/binman/ftest.py   | 28 +++++++++++++++++++++++++---
 4 files changed, 50 insertions(+), 6 deletions(-)

Applied to u-boot-dm, thanks!