[PATCH 11/15] binman: Add minor improvements to symbol-writing

[Simon Glass]

Add a clarification to the documentation and add a missing comment. Also
update the test so that when it fails it is easier to see what is going
on, rather than having to decode hex strings.

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

 tools/binman/binman.rst |  4 +++-
 tools/binman/elf.py     |  3 ++-
 tools/binman/ftest.py   | 36 +++++++++++++++++++++++++++++-------
 3 files changed, 34 insertions(+), 9 deletions(-)

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