[PATCH v2 14/38] binman: Add support for bintools

[Simon Glass]

Binman requires various tools to actually work, such as 'lz4' to compress
data and 'futility' to sign Chrome OS firmware. At present these are
handled in an ad-hoc manner and there is no easy way to find out what
tools are needd to build an image, nor where to obtain them.

Add an implementation of 'bintool', a base class which implements this
functionality. When a bintool is required, it can be requested from this
module, then executed. When the tool is missing, it can provide a way to
obtain it.

Note that this uses Command directly, not the tools.Run() function. This
allows proper handling of missing tools and avoids needing to catch and
re-raise exceptions.

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

(no changes since v1)

 tools/binman/bintool.py | 421 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 421 insertions(+)
 create mode 100644 tools/binman/bintool.py

Applied to u-boot-dm, thanks!