KVM: s390: register flic ops dynamically

Using the new kvm_register_device_ops() interface makes us get rid of
an #ifdef in common code.

Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --cc arch/s390/kvm/kvm-s390.c
Simple merge

diff --cc arch/s390/kvm/kvm-s390.h
Simple merge

diff --cc include/linux/kvm_host.h
Simple merge

diff --cc virt/kvm/kvm_main.c
Simple merge