phy: phy-brcm-usb: Utilize platform_get_irq_byname_optional()

commit 53bffe0 upstream.

The wake-up interrupt lines are entirely optional, avoid printing
messages that interrupts were not found by switching to the _optional
variant.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Justin Chen <justinpopo6@gmail.com>
Link: https://lore.kernel.org/r/20221026224450.2958762-1-f.fainelli@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/phy/broadcom/phy-brcm-usb.c

@@ -445,9 +445,9 @@ static int brcm_usb_phy_dvr_init(struct platform_device *pdev,
 		priv->suspend_clk = NULL;
 	}
 
-	priv->wake_irq = platform_get_irq_byname(pdev, "wake");
+	priv->wake_irq = platform_get_irq_byname_optional(pdev, "wake");
 	if (priv->wake_irq < 0)
-		priv->wake_irq = platform_get_irq_byname(pdev, "wakeup");
+		priv->wake_irq = platform_get_irq_byname_optional(pdev, "wakeup");
 	if (priv->wake_irq >= 0) {
 		err = devm_request_irq(dev, priv->wake_irq,
 				       brcm_usb_phy_wake_isr, 0,