ASoC: rt5640: Silence warning message about missing interrupt

Interrupt is optional for the RT5640 codec. Nexus 7 doesn't use interrupt,
this results in a noisy warning message that looks like a error condition.
Make interrupt explicitly optional to silence the message, use modern
IRQF_NO_AUTOEN flag and correct the reg[q]uest typo in the message.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210802185258.1881-1-digetx@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5640.c

@@ -2836,15 +2836,18 @@ static int rt5640_i2c_probe(struct i2c_client *i2c,
 	if (ret)
 		return ret;
 
-	ret = devm_request_irq(&i2c->dev, rt5640->irq, rt5640_irq,
-			       IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
-			       | IRQF_ONESHOT, "rt5640", rt5640);
-	if (ret == 0) {
-		/* Gets re-enabled by rt5640_set_jack() */
-		disable_irq(rt5640->irq);
+	if (rt5640->irq) {
+		/* enabled by rt5640_set_jack() */
+		ret = devm_request_irq(&i2c->dev, rt5640->irq, rt5640_irq,
+				       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN |
+				       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+				       "rt5640", rt5640);
+		if (ret) {
+			dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
+				rt5640->irq, ret);
+			return ret;
+		}
 	} else {
-		dev_warn(&i2c->dev, "Failed to reguest IRQ %d: %d\n",
-			 rt5640->irq, ret);
 		rt5640->irq = -ENXIO;
 	}