ArmVirtPkg: disable list length checks in NOOPT and DEBUG builds
    
    In NOOPT and DEBUG builds, if "PcdMaximumLinkedListLength" is nonzero,
    then several LIST_ENTRY *node* APIs in BaseLib compare the *full* list
    length against the PCD.
    
    This turns the time complexity of node-level APIs from constant to linear,
    and that of full-list manipulations from linear to quadratic.
    
    (See some example OVMF numbers in the previous patch.)
    
    Checking list lengths against an arbitrary maximum -- default value, and
    current ArmVirtPkg setting: 1,000,000 -- seems useless even in NOOPT and
    DEBUG builds, while the cost is significant; so set the PCD to 0.
    
    Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
    Cc: Julien Grall <julien@xen.org>
    Cc: Leif Lindholm <leif@nuviainc.com>
    Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
    Cc: Sami Mujawar <sami.mujawar@arm.com>
    Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3152
    Signed-off-by: Laszlo Ersek <lersek@redhat.com>
    Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>