platform/x86: intel-vbtn: Reset wakeup capable flag on removal

The intel-vbtn device will not be able to wake up the system any more
after removing the notify handler provided by its driver, so make
its sysfs attributes reflect that.

Fixes: 91f9e850d465 (platform: x86: intel-vbtn: Wake up the system from suspend-to-idle)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/intel-vbtn.c

@@ -166,6 +166,7 @@ static int intel_vbtn_remove(struct platform_device *device)
 {
 	acpi_handle handle = ACPI_HANDLE(&device->dev);
 
+	device_init_wakeup(&device->dev, false);
 	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, notify_handler);
 
 	/*