Hello,
Have you tried rebuilding the entire Alexa image but with this repo?
$ repo init -u https://source.codeaurora.org/external/imxsupport/meta-avs-demos -b master -m imx-alexa-sdk-4.9.51-8mq_ga.xml
Apparently, the git that you are using is an old one.
Furthermore, the AWE_CL_8M.tar.bz2 is the package for the voice hat, that in your case, you are not using it. You will need to select "no" at the time you are running the Alexa SDK script and modify the following file.
- cp -v /etc/asound.conf /etc/asound.conf.BACKUP
- cp -v /etc/asound.conf.Regular /etc/asound.conf
Otherwise, you will use the drivers from hardware that you do not have.
Hope this information could help you.
Best regards,
Diego.