usb: core: driver: fix stray tabs in error messages

Commit 8bb54ab573 ("usbcore: add usb_device_driver definition") added
the printk() calls with the error massages spoilt due to the stray tabs
in the middle. Remove these tabs and convert printk() calls to pr_err()
for consistency with the other code, while at it.

Fixes: 8bb54ab573 ("usbcore: add usb_device_driver definition")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/4beb55c4-eb34-7744-155f-033b8f527e23@omprussia.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/core/driver.c

@@ -973,8 +973,7 @@ int usb_register_device_driver(struct usb_device_driver *new_udriver,
 		bus_for_each_dev(&usb_bus_type, NULL, new_udriver,
 				 __usb_bus_reprobe_drivers);
 	} else {
-		printk(KERN_ERR "%s: error %d registering device "
-			"	driver %s\n",
+		pr_err("%s: error %d registering device driver %s\n",
 			usbcore_name, retval, new_udriver->name);
 	}
 
@@ -1050,9 +1049,8 @@ out:
 out_newid:
 	driver_unregister(&new_driver->drvwrap.driver);
 
-	printk(KERN_ERR "%s: error %d registering interface "
-			"	driver %s\n",
-			usbcore_name, retval, new_driver->name);
+	pr_err("%s: error %d registering interface driver %s\n",
+		usbcore_name, retval, new_driver->name);
 	goto out;
 }
 EXPORT_SYMBOL_GPL(usb_register_driver);