Silicon/NXP: Fix missing dependency on VariableFlashInfoLib
The NXP platform firmware build breaks due to the missing
dependency on VariableFlashInfoLib.
Therefore, to satisfy the dependency include VariableFlashInfoLib
in the LibraryClasses.common section.
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>