monitor: Convert do_info_mice() to QObject

Each mouse is represented by a QDict, the returned QObject is a QList of
all mice.

This commit should not change user output.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/monitor.c b/monitor.c
index daa45fc..aa97f89 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2518,7 +2518,8 @@
         .args_type  = "",
         .params     = "",
         .help       = "show which guest mouse is receiving events",
-        .mhandler.info = do_info_mice,
+        .user_print = do_info_mice_print,
+        .mhandler.info_new = do_info_mice,
     },
     {
         .name       = "vnc",