Draft: Workaround autogenerated files and fix license configuration

On gcc-10 a file named enable-execute-stack.c is generated during build time which inherits the default GPL-3 license triggering an error on image generation. In order to be able to include

Also, to follow the same rules across all the entries in copyright.yml add a missing wildcard.

Signed-off-by: Walter Lozano walter.lozano@collabora.com