We're currently building everything except for this file. Since 'fdt_create_empty_tree' can be useful for some platforms, compile this one too. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>