kvm: Add arch reset handler

Will be required by succeeding changes.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/kvm.h b/kvm.h
index ecac828..e4cbedc 100644
--- a/kvm.h
+++ b/kvm.h
@@ -90,6 +90,8 @@
 
 int kvm_arch_init_vcpu(CPUState *env);
 
+void kvm_arch_reset_vcpu(CPUState *env);
+
 struct kvm_guest_debug;
 struct kvm_debug_exit_arch;