extract_utils: extract(): rename FROM variable to SPEC_DST_FILE

* This is a cleanup patch.

Change-Id: I308b0478484ccf9a594078825731606fce5f5507
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
1 file changed
tree: e01353017e717b5a8b5d7151a40b2936a8ec5902
  1. templates/
  2. extract_utils.sh
  3. sdat2img.py