[U-Boot] [PATCH 05/53] binman: Move image/fdt code into PrepareImagesAndDtbs()

[sjg at google.com]

Further reduce the size of the main Binman() function by moving this setup
code into its own function.

Note that the 'images' value is accessed from other modules so must be made
a global.

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

 tools/binman/control.py | 125 +++++++++++++++++++++++-----------------
 1 file changed, 71 insertions(+), 54 deletions(-)

Applied to u-boot-dm, thanks!