DynamicTablesPkg: Arm ACPI GTDT Generator
    
    The GTDT generator uses the configuration manager protocol to
    obtain information about the architectural and platform timers
    available on the platform and generates the ACPI GTDT table.
    This table data is then used by the Table Manager to install
    the GTDT table.
    
    The Table Manager then invokes the generator interface to free
    any resources allocated by the GTDT table generator.
    
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
    Reviewed-by: Alexei Fedorov <alexei.fedorov@arm.com>