58e48b2e72
Recent dtc/libfdt can use either Make or meson as the build system. By using a subproject, our own meson.build can remove the hard coded list of source files. This is also the first step towards managing downloads with .wrap files instead of submodule. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>