xen/irq: implement bind_interdomain_evtchn_to_irqhandler for backend drivers

Impact: new Xen-internal API

Signed-off-by: Ian Campbell <[email protected]>
Signed-off-by: Jeremy Fitzhardinge <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2 files changed