Merge remote-tracking branch 'remotes/rth/tags/pull-rx-20200408' into staging

Add fall through comment for Coverity.

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* remotes/rth/tags/pull-rx-20200408:
  target/rx/translate: Add missing fall through comment

Signed-off-by: Peter Maydell <[email protected]>

Author: pm215

target/rx/translate.c

@@ -2362,6 +2362,7 @@ static void rx_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
         break;
     case DISAS_UPDATE:
         tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
+        /* fall through */
     case DISAS_EXIT:
         tcg_gen_exit_tb(NULL, 0);
         break;