Enforce qemu_get_cpu() to return S390X CPUs in S390X specific files.

Mechanical change using the following coccinelle script:

  @@ expression index; @@
  -   qemu_get_cpu(index, NULL)
  +   qemu_get_cpu(index, TYPE_S390_CPU)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/s390x/ipl.c             | 2 +-
 hw/s390x/s390-virtio-ccw.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index 14cd0a1f7b..377f43416c 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -671,7 +671,7 @@ void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type)
 {
     S390IPLState *ipl = get_ipl_device();
 
-    *cs = qemu_get_cpu(ipl->reset_cpu_index, NULL);
+    *cs = qemu_get_cpu(ipl->reset_cpu_index, TYPE_S390_CPU);
     if (!*cs) {
         /* use any CPU */
         *cs = first_cpu;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 7628b746a8..3bb4b13c5e 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -583,7 +583,7 @@ static HotplugHandler *s390_get_hotplug_handler(MachineState *machine,
 
 static void s390_nmi(NMIState *n, int cpu_index, Error **errp)
 {
-    CPUState *cs = qemu_get_cpu(cpu_index, NULL);
+    CPUState *cs = qemu_get_cpu(cpu_index, TYPE_S390_CPU);
 
     s390_cpu_restart(S390_CPU(cs));
 }
-- 
2.41.0