KVM: Redesign kvm_io_bus_ API to pass VCPU structure to the callbacks.

KVM: Redesign kvm_io_bus_ API to pass VCPU structure to the callbacks.

This is needed in e.g. ARM vGIC emulation, where the MMIO handling
depends on the VCPU that does the access.

Signed-off-by: Nikolay Nikolaev <[email protected]>
Signed-off-by: Andre Przywara <[email protected]>
Acked-by: Paolo Bonzini <[email protected]>
Acked-by: Christoffer Dall <[email protected]>
Reviewed-by: Marc Zyngier <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>