[U-Boot] [PATCH 14/25] binman: Add a way to enable debugging from the build

[sjg at google.com]

When the build fails due to something wrong in binman it is sometimes
useful to get a full backtrace showing the location of the failure. Add
a BINMAN_DEBUG environment variable to support this along with some
documentation.

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

 Makefile            | 6 ++++--
 tools/binman/README | 6 ++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

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