567c0c41a6
Outside the qemu_api crate, orphan rules make the usage of ClassInitImpl unwieldy. Now that it is optional, do not use it. For PL011Class, this makes it easier to provide a PL011Impl trait similar to the ones in the qemu_api crate. The device id consts are moved there. Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>