The patman directory has a number of modules which are used by other tools
in U-Boot. This makes it hard to package the tools using pypi since the
common files must be copied along with the tool that uses them.

To address this, move these files into a new u_boot_pylib library. This
can be packaged separately and listed as a dependency of each tool.

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

Fix pylint errors that can be fixed and mask those that seem to be
incorrect.

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

Convert this file to snake case and update all files which use it.

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

Convert this file to snake case and update all files which use it.

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

Convert this file to snake case and update all files which use it.

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

The compression functions are not actually used by patman, so we don't
need then in the tools module. Also we want to change them to use
bintools, which patman will not support.

Move these into a new comp_util module, within binman.

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

Update the ifwi entry type to use this bintool, instead of running
ifwitool directly. This simplifies the code and provides more
consistency as well as supporting missing bintools.

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

The Run() function automatically uses the PATH variable to locate a tool
when running it. Add a function that does this manually, so we don't have
to run a tool to find out if it is present.

This is needed by the new Bintool class, which wants to check which tools
are present.

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

Reverse the order of the return tuple, so that the filename is first.
This seems more obvious than putting the temporary directory first.

Correct a bug that leaves a space on the final line.

Allow the caller to control the name of the temporary directory.

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

This function is handy for binman as well. Move it into the shared 'tools'
module.

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