gpu-viv-bin-mx6q: Don't package wayland libraries in non-wayland builds

gpu-viv-bin-mx6q: Don't package wayland libraries in non-wayland builds

Running

  readelf --dynamic libgc_wayland_protocol.so | grep NEEDED

shows that the library has a runtime dependency on libffi. Same thing
applies to libwayland-viv.so.

For non-wayland builds, where libffi may or may not be available during
package time, skip packaging them so that they don't cause unexpected
dependency changes in buildhistory.

Signed-off-by: Jacob Kroon <jacob.kroon@mikrodidakt.se>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>