Commit 23c5e4ca (convert to memory API) broke the VIA Cuda emulation layer
by not registering the IO structs.

This patch registers them properly and thus makes -M g3beige and -M mac99
work again.
Tested-by: NAndreas Färber <andreas.faerber@web.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>