bcm27xx: update dwc_otc driver with new kthread_complete_and_exit name

Kernel 6.1 renamed and moved complete_and_exit to
kthread_complete_and_exit.

This was just a rename and nothing is changed implementation wise.
Update to the new symbol name to fix compilation error.

Signed-off-by: Christian Marangi <[email protected]>

target/linux/bcm27xx/patches-6.1/950-0106-Add-dwc_otg-driver.patch

@@ -4574,7 +4574,7 @@ Signed-off-by: Jonathan Bell <[email protected]>
 +		usb_gadget_unregister_driver(&fsg_driver);
 +
 +	/* Let the unbind and cleanup routines know the thread has exited */
-+	complete_and_exit(&fsg->thread_notifier, 0);
++	kthread_complete_and_exit(&fsg->thread_notifier, 0);
 +}
 +
 +