intel_adsp_cavs15: All the testcases run failed on ADSP

[KangJianX]

Describe the bug
All the testcases run failed with same error on ADSP

To Reproduce
Steps to reproduce the behavior:

1. twister -p intel_adsp_cavs15 --device-testing -T tests/kernel/mutex/mutex_api/ --west-flash="/home/ztest/work/zephyrproject/zephyr/boards/xtensa/intel_adsp_cavs15/tools/flash.sh,/home/ztest/work/zephyrproject/modules/audio/sof/keys/otc_private_key.pem,/home/ztest/work/zephyrproject/modules/audio/sof/zephyr/ext/rimage/config,/home/ztest/work/zephyrproject/modules/audio/sof/zephyr/ext/rimage/build/rimage" --device-serial-pty="/home/ztest/work/zephyrproject/zephyr/boards/xtensa/intel_adsp_cavs15/tools/adsplog.py,--no-history"

Logs and console output
twister-out/intel_adsp_cavs15/tests/.../Device.log

ERROR: --tool-path /home/ztest/work/zephyrproject/modules/audio/sof/zephyr/ext/rimage/build/rimage: not an executable
FATAL ERROR: refusing to proceed without --force due to above error

Environment:
OS: Fedora28
Toolchain: Zephyr-sdk-0.12.4
Commit id: 660d147

[KangJianX]

ADSP can not run testcases because of commit ID: 168e9ed
This commit removed directory of module/audio/sof/zephyr/ext which is used to run testcases, thus all testcases can not be signed by rimage tool. Or it has new command to run testcases what I do not know?

[nashif]

You need to install rimage on your own, do not rely on rimage from SOF tree. ADSP testcases need to pass without SOF.

[nashif]

ok, verified all works fine if you build rimage and use it standalone without SOF module..., closing.