char: rename CHR_EVENT_RESET to CHR_EVENT_OPENED

The char event RESET is emitted when a char device is opened.
Give it a better name.

Patchworks-ID: 35287
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/monitor.c b/monitor.c
index 3424e60..2566f4a 100644
--- a/monitor.c
+++ b/monitor.c
@@ -3470,7 +3470,7 @@
         mon->mux_out = 1;
         break;
 
-    case CHR_EVENT_RESET:
+    case CHR_EVENT_OPENED:
         monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
                        "information\n", QEMU_VERSION);
         if (!mon->mux_out) {