image_types_uboot: Don't truncate when assembling flash

The generate_flash_image step was creating a file then using dd to
fill in the pieces, but missed adding the conv=notrunc flag, so each
step was shortening the file to its output.

Add the forgotten conversion flag to each dd command.

Signed-off-by: Milton Miller <miltonm@us.ibm.com>
1 file changed
tree: f5c0b22ffda231f2c689bde5fc0a9fb3853fb234
  1. classes/
  2. common/
  3. conf/
  4. COPYING.apache-2.0
  5. COPYING.MIT
  6. LICENSE