KVM: x86: use irqchip_kernel() to check for pic+ioapic

Although the current check is not wrong, this check explicitly includes
the pic.
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/irq_comm.c

@@ -232,7 +232,7 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
 		goto unlock;
 	}
 	clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
-	if (!ioapic_in_kernel(kvm))
+	if (!irqchip_kernel(kvm))
 		goto unlock;
 
 	kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);