[U-Boot] [PATCH 51/53] binman: Split control.WriteEntryToImage() into separate functions

[sjg at google.com]

This code has three distinct phases:

1. The image is loaded and the state module is set up
2. The entry is written to the image
3. The image is repacked and written back to the file

Split the code out with three separate functions, one for each phase.

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

 tools/binman/control.py | 76 ++++++++++++++++++++++++++++++++---------
 1 file changed, 59 insertions(+), 17 deletions(-)

Applied to u-boot-dm, thanks!