target-s390: Convert PTLB

Signed-off-by: Richard Henderson <rth@twiddle.net>
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index f95ba11..e9b9dc1 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -629,6 +629,8 @@
     C(0xda00, MVCP,    SS_d,  Z,   la1, a2, 0, 0, mvcp, 0)
 /* MOVE TO SECONDARY */
     C(0xdb00, MVCS,    SS_d,  Z,   la1, a2, 0, 0, mvcs, 0)
+/* PURGE TLB */
+    C(0xb20d, PTLB,    S,     Z,   0, 0, 0, 0, ptlb, 0)
 /* SET ADDRESSING MODE */
     /* We only do 64-bit, so accept this as a no-op.
        Let SAM24 and SAM31 signal illegal instruction.  */