Linux 6.7-rc1 looks for the venus (video) firmware in
qcom/venus-1.8/venus.mbn instead of qcom/venus-1.8/venus.mdt.
Let's install it in both places with a symlink so that the firmware
packages work for both older and newer Linux versions.
[ci:ignore-count]: lots of packages
[ci:skip-build] already built successfully in CI
Add pmb:cross-native/!tracedeps to applicable firmware packages and
secure both with a test.
This sets the pmb:cross-native and !tracedeps options on all firmware-*
packages that are compatible with the native compilation method. A unit
test ensures the presence of both options while maintaining a list of
exempted packages.
Fixes: #718
[ci:ignore-count] [ci:skip-vercheck] [ci:skip-build]
