qdev/usb: add some convinience aliases.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/usb-hid.c b/hw/usb-hid.c
index 0837ec1..3bf06fa 100644
--- a/hw/usb-hid.c
+++ b/hw/usb-hid.c
@@ -882,6 +882,7 @@
 static struct USBDeviceInfo hid_info[] = {
     {
         .qdev.name      = "QEMU USB Tablet",
+        .qdev.alias     = "usb-tablet",
         .qdev.size      = sizeof(USBHIDState),
         .init           = usb_tablet_initfn,
         .handle_packet  = usb_generic_handle_packet,
@@ -891,6 +892,7 @@
         .handle_destroy = usb_hid_handle_destroy,
     },{
         .qdev.name      = "QEMU USB Mouse",
+        .qdev.alias     = "usb-mouse",
         .qdev.size      = sizeof(USBHIDState),
         .init           = usb_mouse_initfn,
         .handle_packet  = usb_generic_handle_packet,
@@ -900,6 +902,7 @@
         .handle_destroy = usb_hid_handle_destroy,
     },{
         .qdev.name      = "QEMU USB Keyboard",
+        .qdev.alias     = "usb-kbd",
         .qdev.size      = sizeof(USBHIDState),
         .init           = usb_keyboard_initfn,
         .handle_packet  = usb_generic_handle_packet,
diff --git a/hw/usb-wacom.c b/hw/usb-wacom.c
index 4007e0f..55f06bf 100644
--- a/hw/usb-wacom.c
+++ b/hw/usb-wacom.c
@@ -401,6 +401,7 @@
 
 static struct USBDeviceInfo wacom_info = {
     .qdev.name      = "QEMU PenPartner Tablet",
+    .qdev.alias     = "wacom-tablet",
     .qdev.size      = sizeof(USBWacomState),
     .init           = usb_wacom_initfn,
     .handle_packet  = usb_generic_handle_packet,