[PATCH v3 01/12] binman: Allow entry args to be required

[Simon Glass]

If an entry argument is needed by an entry but the entry argument is not
present, then a strange error can occur when trying to read the file.

Fix this by allowing arguments to be required. Select this option for the
cros-ec-rw entry. If a filename is provided in the node, allow that to be
used.

Also tidy up a few related tests to make the error string easier to find,
and fully ignore unused return values.

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

(no changes since v1)

 tools/binman/README.entries             |  7 ++++++-
 tools/binman/etype/blob_named_by_arg.py | 10 ++++++----
 tools/binman/etype/cros_ec_rw.py        |  3 +--
 tools/binman/ftest.py                   | 15 +++++++++++----
 4 files changed, 24 insertions(+), 11 deletions(-)

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