awimage: remove debug printf

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>
awimage: fix A31 support to work correctly

Turns out I didn't catch the fact that the file headers have changed
too. This caused the wrong file information to be used, and therefore
the files extracted not to contain the correct data.

Should work fine now.

Signed-off-by: Ithamar R. Adema <ithamar@upgrade-android.com>