monitor:Don't use '#' flag of printf format ('%#') in format strings

Delete '#' and use '0x' prefix instead

Signed-off-by: Yutao Ai <aiyutao@huawei.com>
Message-Id: <20201125014514.55562-4-aiyutao@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

monitor/misc.c

@@ -919,7 +919,7 @@ static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
         suffix = 'l';
         break;
     }
-    monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
+    monitor_printf(mon, "port%c[0x%04x] = 0x%0*x\n",
                    suffix, addr, size * 2, val);
 }