rtc: bbnsm: add remove hook

Without remove hook to clear wake irq, there will be kernel dump when
doing module test.
"bbnsm_rtc 44440000.bbnsm:rtc: wake irq already initialized"

Add remove hook to clear wake irq and set wakeup to false.

Fixes: eb7b85853c38 ("rtc: bbnsm: Add the bbnsm rtc support")
Signed-off-by: Peng Fan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Alexandre Belloni <[e-mail]>

drivers/rtc/rtc-nxp-bbnsm.c

···
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq %d: %d\n",
 			bbnsm->irq, ret);
-		return ret;
+		goto err;
 	}
 
 	bbnsm->rtc->ops = &bbnsm_rtc_ops;
 	bbnsm->rtc->range_max = U32_MAX;
 
-	return devm_rtc_register_device(bbnsm->rtc);
+	ret = devm_rtc_register_device(bbnsm->rtc);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	dev_pm_clear_wake_irq(&pdev->dev);
+	device_init_wakeup(&pdev->dev, false);
+	return ret;
+}
+
+static void bbnsm_rtc_remove(struct platform_device *pdev)
+{
+	dev_pm_clear_wake_irq(&pdev->dev);
+	device_init_wakeup(&pdev->dev, false);
 }
 
 static const struct of_device_id bbnsm_dt_ids[] = {
···
 		.of_match_table = bbnsm_dt_ids,
 	},
 	.probe = bbnsm_rtc_probe,
+	.remove = bbnsm_rtc_remove,
 };
 module_platform_driver(bbnsm_rtc_driver);