Marvell/Armada7k8k: Remove duplication in .dsc files
Mistakenly in all Marvell Armada7k8k .dsc files
'[LibraryClasses.common]' section was split.
Merge entries into one for each platform.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>