[PATCH v2 5/6] binman: Remove templates after use

[Simon Glass]

It is not necessary to keep templates around after they have been
processed. They can cause confusion and potentially duplicate phandles.

Remove them.

Use the same means of detecting a template node in _ReadImageDesc so that
the two places are consistent.

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

(no changes since v1)

 tools/binman/binman.rst |  8 +++++---
 tools/binman/control.py | 14 +++++++++++++-
 tools/binman/ftest.py   |  7 +++++++
 3 files changed, 25 insertions(+), 4 deletions(-)

Applied to u-boot-dm, thanks!