target/s390x: Indicate and check for local tlb clearing

Let's allow to enable it for the qemu cpu model and correctly emulate
it.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170622094151.28633-2-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index d4fcddb..51b17b9 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -688,6 +688,7 @@
         S390_FEAT_FLOATING_POINT_SUPPPORT_ENH,
         S390_FEAT_STFLE_45,
         S390_FEAT_STFLE_49,
+        S390_FEAT_LOCAL_TLB_CLEARING,
         S390_FEAT_STFLE_53,
     };
     int i;