pseries: Make cpu_update during CAS unconditional

spapr_h_cas_compose_response() includes a cpu_update parameter which
controls whether it includes updated information on the CPUs in the device
tree fragment returned from the ibm,client-architecture-support (CAS) call.

Providing the updated information is essential when CAS has negotiated
compatibility options which require different cpu information to be
presented to the guest.  However, it should be safe to provide in other
cases (it will just override the existing data in the device tree with
identical data).  This simplifies the code by removing the parameter and
always providing the cpu update information.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index b2a8e48..1333110 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -945,7 +945,7 @@
     target_ulong ov_table;
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu_);
     CPUState *cs;
-    bool cpu_match = false, cpu_update = true;
+    bool cpu_match = false;
     unsigned old_cpu_version = cpu_->cpu_version;
     unsigned compat_lvl = 0, cpu_version = 0;
     unsigned max_lvl = get_compat_level(cpu_->max_compat);
@@ -999,10 +999,6 @@
         }
     }
 
-    if (!cpu_version) {
-        cpu_update = false;
-    }
-
     /* For the future use: here @ov_table points to the first option vector */
     ov_table = list;
 
@@ -1028,7 +1024,7 @@
 
     if (!spapr->cas_reboot) {
         spapr->cas_reboot =
-            (spapr_h_cas_compose_response(spapr, args[1], args[2], cpu_update,
+            (spapr_h_cas_compose_response(spapr, args[1], args[2],
                                           ov5_updates) != 0);
     }
     spapr_ovec_cleanup(ov5_updates);