tf-m-nightly-code-coverage: Re-enable as nightly job

Also, set DEVICE_FILTER param to --fvp-only, as code coverage is supported
for FVP devices only, and using this option allows to save a lot on job
run time / LAVA load.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I2932de3e74f68707ea1f5cecd592281cd126d789
1 file changed