[PATCH v2 37/38] binman: Add documentation for bintools

[Simon Glass]

Add this documention to explain how bintools are used and which ones are
available.

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

(no changes since v1)

 doc/develop/package/bintools.rst |   1 +
 tools/binman/binman.rst          |  71 +++++++++++++++++++
 tools/binman/bintools.rst        | 115 +++++++++++++++++++++++++++++++
 3 files changed, 187 insertions(+)
 create mode 120000 doc/develop/package/bintools.rst
 create mode 100644 tools/binman/bintools.rst

Applied to u-boot-dm, thanks!