KVM: Add missing arch for KVM_CREATE_DEVICE and KVM_{SET,GET}_DEVICE_ATTR

The ioctls are missing an architecture property that is present in others.

Suggested-by: Sergio Lopez Pascual <slp@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Message-Id: <20221202105011.185147-5-javierm@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>