extract-utils: Fix usage for ETC files which need sub_dir

Thanks to Tad.

Change-Id: I6a0e7978afce6444d0827f97d7686f23aa7500c9
1 file changed
tree: ba64055f0fe288e7090f22e1258c16eab8b118df
  1. templates/
  2. extract_utils.sh
  3. sdat2img.py