usb core: use qdev for -usbdevice

This patchs adds infrastructure to handle -usbdevice via qdev callbacks.
USBDeviceInfo gets a name field (for the -usbdevice driver name) and a
callback for -usbdevice parameter parsing.

The new usbdevice_create() function walks the qdev driver list and looks
for a usb driver with a matching name.  When a parameter parsing
callback is present it is called, otherwise the device is created via
usb_create_simple().

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/qdev.h b/hw/qdev.h
index 9c8f9e2..41642ee 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -141,6 +141,7 @@ struct DeviceInfo {
     BusInfo *bus_info;
     struct DeviceInfo *next;
 };
+extern DeviceInfo *device_info_list;
 
 void qdev_register(DeviceInfo *info);