ArmVirtPkg/PlatformHasAcpiDtDxe: Move to OvmfPkg

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076



This module is required by other architectures like RISC-V.
Hence, move this to OvmfPkg.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>