ArmVirtPkg: include VirtioFsDxe in the ArmVirtQemu* platforms

ArmVirtPkg: include VirtioFsDxe in the ArmVirtQemu* platforms

Include the VirtioFsDxe driver in the ArmVirtPkg platforms that include
Virtio10Dxe. (The virtio-fs device is virtio-1.0-only.)

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201216211125.19496-3-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>