qapi: Convert eject

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
diff --git a/qmp-commands.hx b/qmp-commands.hx
index d7264b2..185beba 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -84,10 +84,7 @@
     {
         .name       = "eject",
         .args_type  = "force:-f,device:B",
-        .params     = "[-f] device",
-        .help       = "eject a removable medium (use -f to force it)",
-        .user_print = monitor_user_noop,
-        .mhandler.cmd_new = do_eject,
+        .mhandler.cmd_new = qmp_marshal_input_eject,
     },
 
 SQMP