USB: at91_udc, fix more modpost bogosity (rename driver struct)

Rename the driver struct used with at91_udc to prevent yet another
bogus warning from "modpost".

Signed-off-by: David Brownell <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/gadget/at91_udc.c

···
 #define	at91udc_resume	NULL
 #endif
 
-static struct platform_driver at91_udc = {
+static struct platform_driver at91_udc_driver = {
 	.remove		= __exit_p(at91udc_remove),
 	.shutdown	= at91udc_shutdown,
 	.suspend	= at91udc_suspend,
···
 
 static int __init udc_init_module(void)
 {
-	return platform_driver_probe(&at91_udc, at91udc_probe);
+	return platform_driver_probe(&at91_udc_driver, at91udc_probe);
 }
 module_init(udc_init_module);
 
 static void __exit udc_exit_module(void)
 {
-	platform_driver_unregister(&at91_udc);
+	platform_driver_unregister(&at91_udc_driver);
 }
 module_exit(udc_exit_module);