gitlab-ci: Fix ARMv7 build
It appears that the CI refactoring carried out in 5ff690b8 failed to carry over some critical configuration: setting the build/host/target platforms and forcing use of a non-broken linker.
It appears that the CI refactoring carried out in 5ff690b8 failed to carry over some critical configuration: setting the build/host/target platforms and forcing use of a non-broken linker.