ppce500_spin: Initialize struct properly

The spinning struct is in guest endianness, so we need to initialize
its variables in guest endianness too.

This fixes booting e500 guests with SMP on x86 for me.

Signed-off-by: Alexander Graf <agraf@suse.de>

hw/ppc/ppce500_spin.c

@@ -65,9 +65,9 @@ static void spin_reset(void *opaque)
     for (i = 0; i < MAX_CPUS; i++) {
         SpinInfo *info = &s->spin[i];
 
-        info->pir = i;
-        info->r3 = i;
-        info->addr = 1;
+        stl_p(&info->pir, i);
+        stq_p(&info->r3, i);
+        stq_p(&info->addr, 1);
     }
 }